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Marine Batteries
November 14, 2023 By 0 Comments

LiFePO4 Batteries FAQs: Quick Insights for the Inquisitive

Curiosity often accompanies technological advancements, and in the realm of batteries, LiFePO4 (Lithium Iron Phosphate) has sparked numerous questions. Let’s dive into quick answers to common queries surrounding LiFePO4 batteries, shedding light on their efficiency, safety, and distinctive features.

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1. Is LiFePO4 the Same as Lithium Ion?

Not at all! LiFePO4 differs significantly from lithium-ion polymer batteries. The distinctive chemistry of LiFePO4 results in a cycle life over four times longer than lithium-ion polymer batteries.

2. Are LiFePO4 Batteries Good?

Absolutely! LiFePO4 batteries excel in efficiency compared to traditional counterparts. Their lightweight nature allows utilizing most of the battery’s capacity without issues, a notable advantage over lead-acid batteries that can only use approximately 50% of their capacity before sustaining damage.

3. Can LiFePO4 Catch Fire?

No, LiFePO4 batteries are renowned for their safety. Unlike other lithium batteries, they will not catch fire or overheat, even when punctured. This safety feature marks a significant upgrade over alternative lithium batteries prone to overheating and fire risks.

4. Is LiFePO4 Better than Lithium Ion?

Indeed, LiFePO4 takes the lead in terms of cycle life, lasting 4-5 times longer than lithium-ion batteries. Additionally, the safety aspect is a crucial advantage, as lithium-ion batteries can be prone to overheating and fire, a risk mitigated by LiFePO4.

5. Why Is LiFePO4 So Expensive?

While LiFePO4 batteries may have a higher upfront cost due to the materials used, they prove cost-effective in the long run. Their extended lifespan, coupled with advantages such as lighter weight, increased safety, and minimal maintenance, justifies the initial investment.

6. Is LiFePO4 a Lipo?

No, LiFePO4 and Lipo are not the same. While both belong to the lithium chemistry family, LiFePO4 offers distinct advantages over Lipo batteries.

7. What Can I Use LiFePO4 Batteries For?

LiFePO4 batteries find applications in various domains, similar to lead-acid, AGM, or other traditional batteries. From powering marine vehicles and RVs to supporting solar setups, mobility scooters, and more, LiFePO4 batteries offer versatile usage.

8. Is LiFePO4 More Dangerous than AGM or Lead Acid?

No, LiFePO4 is notably safer. It doesn’t leak toxic fumes, spill sulfuric acid like lead-acid batteries, and avoids the risks of overheating or catching fire associated with some other battery types.

9. Can I Leave My LiFePO4 Battery on the Charger?

Yes, if your LiFePO4 batteries incorporate a battery management system, they can be left on the charger without overcharging risks. Modern LiFePO4 batteries, such as Ionic batteries, typically feature built-in battery management systems.

10. What Is the Life Expectancy of LiFePO4 Batteries?

Life expectancy is a standout feature of LiFePO4 batteries. Rated to last around 5,000 cycles, equivalent to approximately 10 years or more depending on usage, these batteries maintain functionality even after reaching this cycle limit, operating at 70% capacity or better.

In essence, LiFePO4 batteries stand out as a reliable, efficient, and safe choice, proving their worth across various applications.
Marine Batteries
November 14, 2023 By 0 Comments

The Ultimate Electric Boat Battery, Unlocking the Power of Lithium Iron Phosphate (LiFePO4)

Selecting the right battery for your electric boat is a critical decision that directly influences its performance and overall efficiency. With a plethora of rechargeable batteries available, each boasting unique features, the choice can be overwhelming. In this comprehensive guide, we explore the various types of batteries, emphasizing why Lithium Iron Phosphate (LiFePO4) batteries emerge as the top choice for electric boats.

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Types of Rechargeable Batteries for Electric Boats

Before delving into the specifics of LiFePO4 batteries, let’s understand the landscape of rechargeable batteries commonly used in electric boats:

  1. Lead-Acid Batteries: This category includes Flooded Lead-Acid (FLA), Absorbent Glass Mat (AGM), Gel, and Valve-Regulated Lead-Acid (VRLA) batteries.
  2. Nickel-Based Batteries: Nickel-Cadmium (Ni-Cd) and Nickel-Metal Hydride (NiMH) batteries fall under this classification.
  3. Lithium-Ion Batteries: The most popular rechargeable batteries globally, featuring various types such as Lithium Nickel Manganese Cobalt Oxide (NMC), Lithium Cobalt Oxide (LCO), Lithium Manganese Oxide (LMO), Lithium Nickel Cobalt Aluminum Oxide (NCA), and Lithium Iron Phosphate (LiFePO4).

48V Lithium-Ion Battery

For electric boats ranging from 3-5 meters, a 48V Lithium-Ion battery, particularly the LiFePO4 variant, strikes an optimal balance between power and safety. Brands like ZeroJet have pioneered revolutionary 48V systems that deliver substantial power while maintaining a safe voltage level.

Understanding LiFePO4 Battery

LiFePO4, or Lithium Iron Phosphate, represents a specific type of Lithium-Ion battery distinguished by its unique chemistry. The key differentiators include:

  1. Electrochemistry: LiFePO4 batteries utilize solid but thin and porous electrodes, non-aqueous electrolytes, graphite and carbon as anode material, and inorganic, non-flammable electrolytes. This composition leads to a stable voltage profile and low internal resistance.
  2. Lower Operating Voltage: LiFePO4 batteries operate at a lower voltage, providing a stable and flat voltage profile.

Top 5 Reasons LiFePO4 is the Best for Electric Boats

  1. High Discharge Rate: LiFePO4 batteries outshine other Li-ion batteries in terms of discharge rate. Their ability to consistently deliver higher power output over their lifespan ensures efficient energy release, enabling higher speeds and faster acceleration for your electric boat.
  2. Superior Energy Density: With a high energy density, LiFePO4 batteries pack more power into less weight. This feature is crucial for achieving fast acceleration, high speeds, and optimizing onboard space, making them ideal for small watercraft.
  3. Longest Cycle Life: LiFePO4 batteries boast an impressive cycle life, capable of enduring 3,000-5,000 cycles at 80% Depth of Charge. This longevity far surpasses other Lithium-ion batteries, nickel-based batteries, and lead-acid batteries, offering up to three times the use before replacement.
  4. Environmental Friendliness: LiFePO4 batteries stand out as an environmentally friendly choice. Free from hazardous materials like cobalt and nickel, they contribute to a cleaner ecosystem. Their longevity and lower maintenance also reduce waste and electricity usage over time.
  5. Enhanced Safety and Resilience: Incombustible and featuring a low risk of thermal runaway, LiFePO4 batteries prioritize safety. With a non-flammable electrolyte and resistance to extreme temperatures, they are a secure choice for both usage and storage.

Conclusion

When it comes to powering your electric boat, the Lithium Iron Phosphate (LiFePO4) battery emerges as the undisputed champion. Its high discharge rate, superior energy density, extended cycle life, environmental friendliness, and enhanced safety make it the optimal choice for boaters seeking peak performance and reliability. As you embark on your electric boating journey, choose LiFePO4 to unlock the full potential of your watercraft.
Marine Batteries
November 14, 2023 By 0 Comments

How Marine Batteries Power Your Boating Adventures

If your passion lies in exploring the vast waters on your boat, having a reliable power source is paramount to ensuring safety, comfort, and an enjoyable experience. At the heart of this power system is the marine battery—a specialized component designed to meet the unique demands of the marine environment.

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What Are Marine Batteries?

Marine batteries are not your typical automotive batteries; they are specifically crafted for use in boats and other water-based recreational equipment. Unlike traditional lead-acid car batteries, marine batteries come equipped with features tailored to support the specific requirements of a boat’s engine and running systems.

Key Features of Marine Batteries

  1. Protection Against Harsh Conditions: Boats face a challenging environment, including vibration, high temperatures, and exposure to saltwater. The best marine batteries are constructed with thicker and heavier plates, providing durability to withstand these harsh operating conditions.
  2. Maintenance-Free Designs: Some marine batteries incorporate maintenance-free plate designs. This innovation minimizes battery corrosion and fluid loss, contributing to a longer lifespan and reducing the need for regular maintenance.
  3. Variety in Construction: Certain marine batteries, such as AGM (Absorbent Glass Mat) batteries, boast sealed and dryfit construction. This not only enhances their capacities but also prevents electrolyte leaks, reducing the risk of damage to your valuable equipment on board.

Choosing the Right Marine Battery

Selecting the appropriate marine battery is a critical decision that directly impacts your vessel’s performance and longevity. Factors to consider include:

  1. Battery Type: Understand the distinctions between marine starter batteries and deep cycle batteries. Starter batteries deliver a burst of high-energy power for engine starting, while deep cycle batteries provide a steady stream of energy over a more extended period. Matching the right type to your boat’s needs is crucial.
  2. Construction: Opt for batteries with robust construction, featuring thicker plates for durability. Consider sealed and dryfit designs, especially in products like AGM batteries, for enhanced performance and reduced maintenance.

Applications of Marine Batteries

Marine batteries serve various functions on boats, from starting the engine to powering essential electronic devices when the motor is off. Deep cycle batteries are commonly employed for trolling motors, livewell pumps, bait tanks, depth finders, fish finders, radios, and other electronic equipment.

Maintenance and Longevity

To ensure your marine battery stands the test of time, follow these maintenance tips:

  1. Regular Inspections: Check for fluid levels, especially in FLA (Flooded Lead-Acid) deep cycle batteries. Top up with distilled water as needed.
  2. Cleanliness: Keep the battery and terminals clean to prevent dirt, grime, and corrosion, which can compromise performance.
  3. Charging Practices: Use a battery charger maintainer to keep the battery charged when not in use. Avoid overcharging, and recharge the battery promptly after use to maintain optimal performance.

Conclusion

As you prepare to set sail in the upcoming boating season, understanding the nuances of marine batteries is essential. Whether you opt for traditional FLA batteries or embrace the advancements in AGM or other types, choosing the right marine battery ensures a reliable power source for your boating adventures. Take the time to assess your boat’s specific needs and invest in a high-quality marine battery—your key to a smooth and enjoyable time on the water.
Marine Batteries
November 14, 2023 By 0 Comments

Lithium Marine Battery Knowledge, Comprehensive Guide

If you’re a passionate boater gearing up for the 2023 boating season, understanding the intricacies of marine batteries is crucial for a safe and enjoyable experience on the water. Among the various types available, lithium-ion batteries have gained popularity in marine applications due to their unique features. In this comprehensive guide, we’ll delve into the specifics of lithium marine batteries and why they’re becoming a favored choice for boat owners.

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Advantages of Lithium-ion Batteries

  1. Weight-to-Energy Density Ratio: One of the primary advantages of lithium-ion batteries is their low weight-to-energy density ratio. This means they provide a high amount of energy storage relative to their weight, making them ideal for marine applications where weight is a critical consideration.
  2. Longevity: Lithium-ion batteries generally have a longer lifespan compared to traditional lead-acid batteries. While the lifespan can vary based on usage, a well-maintained lithium-ion marine battery can last for many years, contributing to a better return on investment.
  3. Fast Charging: Lithium-ion batteries typically have a faster charging rate compared to other battery types. This means less time waiting for your battery to recharge, allowing you to get back on the water sooner.
  4. Maintenance-free: Unlike traditional flooded lead-acid batteries that require periodic maintenance, lithium-ion batteries are virtually maintenance-free. This can save boat owners time and effort, allowing for a more hassle-free boating experience.

Considerations for Boaters

  1. Safety Risks and Costs: While lithium-ion batteries offer numerous benefits, boaters must be aware of the safety risks and costs associated with them. It’s essential to thoroughly understand the potential hazards and take necessary precautions.
  2. Expense: Lithium-ion batteries are generally more expensive upfront compared to traditional marine batteries. However, many boaters find the long-term benefits, such as extended lifespan and enhanced performance, justify the initial investment.

Selecting the Right Lithium-ion Battery

When choosing a lithium-ion battery for your marine application, consider the following factors:

  1. Compatibility: Ensure the battery is compatible with your boat’s engine size and can meet the power requirements of your onboard devices.
  2. Temperature Tolerance: Opt for a battery that can tolerate a range of temperatures. Lithium-ion batteries are known for their stable performance in various temperature conditions.
  3. Brand Reputation: Research and choose reputable brands with positive reviews from other boaters. Consult with local battery supply stores for recommendations based on customer feedback and reliability over time.

Conclusion

As you prepare for the upcoming boating season, investing in a lithium-ion marine battery can significantly enhance your boating experience. With their lightweight design, long lifespan, and fast-charging capabilities, lithium-ion batteries are revolutionizing the marine battery landscape. However, it’s crucial to weigh the benefits against the potential safety risks and upfront costs to make an informed decision that aligns with your boating needs. With the right lithium-ion battery, you can enjoy a reliable and efficient power source for your boat, ensuring a smooth and worry-free time on the water.
Knowledge
November 9, 2023 By 0 Comments

What Is The Voltage Of A Motorcycle Battery?

While some oldtimer motorcycles still operate at 6V, but they are rather rare, most motorcycles have 12V electrical systems. In addition to starting the internal combustion engine, motorcycle batteries provide power for lights and other electric systems when the engine is off. A simple multimeter can be used to measure the actual condition of a battery in a variety of situations.

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Motorcycle Batteries Chemistries

Motorcycle batteries can be starting lead-acid and lithium batteries.

Flooded/Wet Lead-Acid batteries
They must be operated in an upright position since they are not spill-proof batteries. It is also necessary to add distilled water occasionally since they lose water over time, especially during hot weather.

Gel-Cell Lead-Acid batteries
A gel-cell lead-acid battery is spill-proof, maintenance-free, and works anywhere except upside down. In a gel-cell battery, electrolytes are suspended in silica in the form of gel. A gel-cell battery is very vibration resistant and has a low self-discharge rate.

Absorbent Glass Mat (AGM) Lead-Acid batteries
It is another type of spill-proof and maintenance-free Lead-Acid battery that can operate in any position except upside down. As a result of their mechanical robustness and good electrical features, AGM batteries are a popular choice for people looking for lead-acid motorcycle batteries.

Lithium motorcycle batteries
The majority of lithium motorcycle batteries are based on LiFePO4 chemistry, known for its stability and strong performance. However, there are also Lithium Polymer options available that boast fantastic performance, although they may not be the most stable option in my opinion. It is important for all lithium batteries to have a built-in Battery Management System to prevent issues such as overcharging or over-discharging. While lead-acid batteries are still the preferred choice for many motorcycles, lithium batteries are becoming increasingly popular due to their enhanced starting capabilities, weight reduction advantages, and additional features not found in lead-acid batteries.

Lead-Acid Battery Voltages

Voltmeters are useful for checking the voltage of motorcycle batteries in various situations.

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The lead-acid battery voltages are as follows (measured at 77°F/25°C) when the motorcycle is completely off (ignition key out):

Type 100% SoC 75% SoC 50% SoC 25% SoC 0% SoC
Flooded/Wet 12.65 volts 12.45 volts 12.24 volts 12.06 volts 11.89 volts
AGM 12.80 volts 12.60 volts 12.40 volts 12.00 volts 11.80 volts
Cranking Possible Yes Yes Probably Yes Probably No No

Depending on the type of battery (Calcium Enhanced AGM, Enhanced Flooded, etc.), these values may vary slightly. AGM batteries typically have a voltage between Flooded and Gel-cell batteries, but this can also vary depending on the model. Please refer to the battery’s documentation for exact voltages. However, this information is not always included in the documentation.

Lithium Battery Voltages

As a rule, motorcycle lithium batteries have a nominal voltage of 12.8 volts. Lithium batteries are equipped with BMSs that monitor battery voltage and charge to prevent overdischarge. A battery’s cutoff voltage varies according to model, but usually ranges between 10.0 and 11.5 volts. If the battery voltage falls below a certain level, the BMS disconnects the battery.

Lithium Battery Reset Button

Occasionally, lithium motorcycle batteries are reset by the battery management system when the actual voltage falls below a certain level, causing the battery to switch off. When the user presses the reset button, the BMS connects the battery for a final cranking attempt after it still holds enough charge. As soon as the engine starts, the motorcycle alternator recharges the battery, along with the charge controller.

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Battery Voltages With The Engine On

When the idle engine exhibits a low or non-existent charging current, it’s important to ensure that the charging system is functioning properly. One way to do this is by revving the engine to 2000+ RPM and checking the voltage. A reading between 13.5 and 14.5 volts indicates that the battery is receiving a sufficient charge. However, if despite a sluggish start, the voltage still falls within the 14+ range at 2000+ RPM, it suggests that while the charging system is effective, the battery may have trouble holding a charge.

On the other hand, if the battery successfully starts the engine but registers a voltage of around or slightly below 12.5V even at 2000+ RPM, it suggests an issue with the motorcycle’s charging system.

How To Charge The Motorcycle Battery

If the motorcycle battery is low, there are a few options for recharging it. One way is by riding a bike for 60-120 minutes, while another is by using an advanced battery charger. These chargers first analyze the battery before determining the appropriate charging method. Lead-acid batteries typically require currents between 0.10-0.15C, while lithium batteries can handle stronger currents around 0.5C. As a result, smart lead-acid battery chargers with 1-3 Amps can recharge most lead-acid motorcycle batteries, whereas smart lithium battery chargers with 3-10 Amps are suitable for recharging lithium motorcycle batteries.

Conclusion

It is possible to tell the condition of the motorcycle charging system and battery by monitoring the voltage of the motorcycle battery. Extreme temperatures, mechanical impacts, and vibrations are the biggest killers of properly maintained motorcycle batteries.

During winter and summer, keep the motorcycle in the garage and ride safely…
Knowledge
November 9, 2023 By 0 Comments

Is It Possible To Jump Start A Motorcycle With A Car Battery?

If the rider’s battery is discharged on the side of the road, he may find himself having to start the motorcycle’s engine in several ways, including pushing/bumping, using a motorcycle jump starter, or starting a car jump starter.

Often people wonder if you can jump-start a motorcycle with a car battery. After all, both motorcycles and cars use 12V electrical systems, right? Well, not necessarily..

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Discharged Motorcycle Battery

When changing the battery on a motorcycle or car, the last thing a rider/driver wants is to hear the dreaded “click” (or “clicks”).

When that happens to a motorcycle rider, one can try several ways to start the engine, including:

  • push/bump start,
  • using a jump starter,
  • using jumper cables and another motorcycle,
  • using jumper cables and a car.

Most riders are probably familiar with the first three methods, but the final one, jump-starting a motorcycle using a car and car battery, tends to confuse many riders, leaving them wondering if such a method will damage their motorcycle.

Why Motorcycle Battery Gets Discharged

There are several factors that can cause motorcycle batteries to lose charge, such as high parasitic drain or leaving the lights on.

Another potential issue may be with the alternator/stator generator. As a battery ages, it gradually loses its ability to store and release charge effectively. However, if it can still start the engine, it should be capable of powering the onboard electronics when paired with a functioning alternator/stator generator.

So even if the battery is not completely drained, jumpstarting can still allow the engine and electronics to continue running as long as the alternator/stator generator is in working order.

On the other hand, if both the battery and alternator/stator generator are not functioning properly and require jumpstarting, once the external power source is removed, the engine will likely shut off. In summary, jumpstarting a motorcycle only works when the battery is nearly dead but the alternator/stator generator is functional.

Jump Starting A Motorcycle With A Car Battery

Is it possible to jump-start a motorcycle with a car battery when all other options are unavailable?

Yes, it can.

Is it a safe way of starting a motorcycle?

No, it is not.

This is why… Both motorcycles and cars have 12V electrical systems, at least theoretically. In real life, voltage is determined by the state of the battery, how full it is, whether the engine is running, and so on. The voltages of both electrical systems vary between 12V (voltage of almost discharged lead-acid batteries) and 13.7-14.7V (charging voltage of the alternator, when the battery is fully charged).

So, what is the problem?

When connecting a 12V battery to a motorcycle starter, the necessary current (in Amps) will be drawn to start the engine. This remains true for both a 10Ah and 70Ah battery as their internal resistances are much lower than that of the starter.

However, if a fully charged car battery (e.g. 70Ah) is connected to a discharged motorcycle battery (e.g. 10Ah), there may be an initial large current flow, exceeding the recommended charging rate for lead-acid batteries (typically 0.1C to 0.15C).

If the car’s engine is running and its alternator is keeping the voltage high, this initial charge may permanently damage the motorcycle battery. Is there any risk to motorcycle electronics in this situation?

Generally, no – but if the car’s engine is running, there may be a potential for high voltage or voltage spikes which could harm the electronics. Modern cars typically have voltage charge controllers that help regulate and smooth out the voltage from the battery, reducing the likelihood of spikes – but why take any chances…

How To Crank The Motorcycle With A Car Battery

Again, this should be done only if other methods are unavailable. Connect the red (positive) terminal of the car battery to the red terminal of the motorcycle battery using jumper cables.

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Carefully link the negative terminal of the car battery to an exposed metal component of the motorcycle – this indirect connection provides added safeguard for the motorcycle’s battery.

When joining the two vehicles, allow the car’s battery to replenish the motorcycle’s battery for a brief period of 30-60 seconds – this will boost the voltage of the motorcycle’s battery, allowing its alternator or stator generator to recharge it.

Start the motorcycle engine and detach the cables in reverse order than when they were connected.

If you encounter difficulty starting or if the engine stalls as soon as you remove the black cable, extend the charging time by another 30-60 seconds.
Attempt to start the engine once again.

Next, regardless of whether or not you were able to successfully crank it, disconnect the cables and give some time for both batteries to regain their strength. Then, start up the car and let it run for a few minutes to ensure its battery is fully recharged.

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Feel free to ride the bike for at least 30-60 minutes after the cranking is successful, and then check the battery’s voltage and check if the battery is strong enough to crank the engine – of course, turn off the engine when you return home or to a workshop.

If the cranking was unsuccessful, and especially if the engine shuts off when the black jumper cable is removed, you should take the bike to the workshop to have the battery, alternator/stator generator, charging electronics, and the rest of the bike’s electrical system examined.

Conclusion

It is possible to use a car engine to crank a motorcycle, but there are potential risks involved. Many motorcycle manufacturers, especially those of motorcycle batteries, advise against this practice. Doing so can potentially void the warranty on the battery and raise questions about the motorcycle’s electronics if any issues arise after cranking.

The author of this article has personally used car batteries to crank motorcycles multiple times without any problems, but it should be noted that each individual takes on their own responsibility when doing so.
Knowledge
November 9, 2023 By 0 Comments

How Long Does It Take To Charge a Motorcycle Battery

Motorcycle batteries are typically maintained by the onboard charging system, but they may occasionally lose their charge. This can be caused by various factors such as hot weather, which increases self-discharge rates, as well as parasite loads from alarms and similar systems.

Additionally, long periods of inactivity, such as during winter, can also contribute to battery discharge. To ensure a longer lifespan for your motorcycle battery and prevent potential problems with starting the engine, it is important to properly recharge it if it becomes semi or fully discharged.

 

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Motorcycle Battery Types

Most popular motorcycle batteries are starting/cranking lead-acid wet/flooded and AGM batteries, with the Gel-Cell batteries also being used as well.

Lithium motorcycle drop-in replacement batteries are not as common and are mostly used in high-end and professional applications.

Lead-acid motorcycle batteries are mostly 12V batteries with capacity ranging from 5-6 to 20+ Ah.

Although these batteries are much smaller than larger deep-cycle batteries, since they are designed and optimized for one purpose, to crank gas and diesel engines, these batteries are able to provide very strong currents.

A battery’s charge time depends on its age, Depth of Discharge (DoD%), and capacity.

In general, starting batteries can be safely charged between 0.1C – 0.15C, although some models allow charging between 0.25C – 0.33C.

With a 2-3A battery charger, you can safely charge 20-25 Ah batteries.

Whenever charging lead-acid batteries, it is recommended to use an AGM battery charger with modes for wet/flooded, AGM, and Gel-Cell batteries, since all these battery types have very similar, but different charging end voltages.

Temperature compensation is also necessary to prevent under- and overcharging of batteries.

Battery chargers that analyze lead-acid batteries first charge them according to their condition – if necessary, they use desulphation and deep-discharge recovery modes.

As soon as the battery is fully charged, smart AGM battery chargers switch to maintenance mode, keeping the battery fully charged longer.

Using different AGM battery chargers, the following comparison chart shows charging times for fully discharged (100% DoD) motorcycle batteries:

Battery Capacity Battery Charger
0.5A 0.75A 1A 2A 3A 4A 5A
6Ah 12-13h 8-10h 6-7h – – – –
8Ah – 11-12h 8-9h (4-4.5h) – – –
10Ah – – 10-11h (5-5.5h) – – –
12Ah – – 12-13h 6-7h (4-4.5h) – –
15Ah – – –  8-9h (5-5.5h) – –
18Ah – – – 9-10h 6-7h (4.5-5h) –
20Ah – – – 10-11h 6.5-7.5h (5-5.5h) –
25Ah – – – 12-13h 8.5-9-5h 6.5-7h (5-5.5h)
30Ah – – – – 10-11h 7.5-8.5h 6-7h

Note: These values are only general estimates and can be affected by factors such as the battery’s condition, depth of discharge (DoD), age, and temperature. Any readings marked with a “-” indicate that the battery is not suitable for use, while values like “(5-5.5h)” suggest that the battery can still be recharged, but the charger may be slightly overpowering. However, to accurately determine the ideal charging current for your specific battery, you may refer to its documentation and identify the maximum allowed charging current.

You should probably consider a 2.0 Amps smart AGM battery charger if you are looking for a good motorcycle lead-acid battery charger.

Lithium motorcycle batteries should only be recharged using lithium battery chargers or smart AGM battery chargers with lithium battery charging modes.

Lithium starting motorcycle batteries may be recharged with currents ranging from 0.2C to 1.0C depending on their design.

For the proper charging current, please refer to the documentation of your battery.

Note: Lithium batteries are charged using the so-called CC/CV (Constant Current/Constant Voltage) algorithm which differs from the lead-acid battery charging algorithm.

The following comparison chart lists charging times of the fully discharged lithium motorcycle batteries using different lithium battery chargers:

Battery Capacity Battery Charger
1A 2A 3A 5A 10A 15A
6Ah 6-7h 3-3.5h 2-2.5h – – –
8Ah  8-9h  4-4.5h 2.5-3h (1.5-2h) – –
10Ah  10-11h  5-5.5h 3.5-4h  2-2.5h  –  –
12Ah –  6-6.5h  4-4.5h  2.4-3h  –  –
15Ah –  7.5-8h  5-5.5h  3-3.5h  –  –
18Ah –  9-9.5h  6-6.5h  3.5-4h  (1.5-2h)  –
20Ah –  10-11h  6.5-7h  4-4.5h  2-2.5h  –
25Ah – –  8.5-9h  5-5.5h  2.5-3h  (1.5-2h)
30Ah – –  10-11h  6-6.5h  3-3.5h  2-2.5h

Note: Also, values with “-” or “(1.5-2h)” mean that the battery may be recharged with such current, but perhaps the charger is a bit too strong.

Anyhow, it is highly recommended when charging the lithium batteries to find the battery documentation and check the maximum allowed charging current – lithium batteries are usually protected by an internal Battery Management System (BMS) that does not allow too strong a charge current.

If you are looking for a good motorcycle dedicated lithium battery charger, a 3.0 Amp smart lithium battery charger is probably your best bet, but first check your battery and its maximum charging current.

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Conclusion

Getting the battery so discharged that it is unable to crank the engine is very difficult if you ride your motorcycle regularly and everything is well with its electric system. You should check the battery type and capacity and get a charger for the battery – in most cases, the battery should still be able to go for a long time.

If, however, the smart battery charger indicates that the battery is bad, perhaps it’s time to get a Powersports Battery and replace it.
Knowledge
November 9, 2023 By 0 Comments

A BS on a motorcycle battery means what?

In most cases, a motorcycle or powersports battery label contains the brand, the size, and the letters “BS”. The battery brand and the size/group are self-explanatory, but the letters “BS” are not.

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The letters “BS” on motorcycle batteries can mean several things:

– Battery Sealed (BS): BS-labeled motorcycle batteries are spill-proof, maintenance-free, and can operate almost anywhere, except upside down. However, some models can also operate upside down.

Factory Activated (FA) and Battery Sealed (BS) batteries are filled with electrolyte, sealed, and fully charged. Factory-activated batteries can be maintained, but they cannot be stored for long periods.

– Bottle Supplied (BS): Occasionally, motorcycle batteries are delivered as dry batteries with their electrolyte stored in plastic containers containing the exact amount of electrolyte.

Before their use, “Bottle Supplied” (BS) batteries must be activated – they are filled with electrolyte from the containers. This type of battery can be either wet/cell or AGM, both requiring very similar activation procedures.

Unlike “Battery Sealed” (BS) batteries, “Bottle Supplied” (BS) dry batteries have a much longer shelf life and they do not require maintenance/recharging while being stored for a longer period of time.

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Conclusion

“Bottled Supplied” (BS) batteries may have a longer operating life since they are activated just prior to use, but with “Battery Sealed” (BS) batteries one doesn’t have to deal with a very aggressive and toxic sulfuric acid (H2SO4) which is used as an electrolyte in the lead-acid batteries, even though it is somewhat diluted.

What do the letters mean on a motorcycle battery?
The letters on a motorcycle battery indicate its series, type, and features. For example, “YTX” shows Yuasa-brand, AGM technology, and case design, while specific codes like “B” or “BS” hint at design features such as “Bottle Supplied” for acid or sealed maintenance-free construction. Each letter represents compatibility and battery characteristics.

Is 12.9 V good for a motorcycle battery?
Yes, 12.9 V is considered a good voltage for a fully charged motorcycle battery, especially for AGM types, which are 100% charged between 12.8 and 13.0 volts. This level indicates the battery is healthy, holding full charge, and ready for reliable starts and electrical performance.

Are BS batteries any good for motorcycles?
BS batteries are recognized for reliability and consistent performance in motorcycles. They offer sealed, maintenance-free designs and advanced AGM or lithium technology, making them a popular choice throughout Europe and Asia for both original equipment and replacement needs.

What do the letters on a battery mean?
Battery letters denote brand, chemistry, and features. For motorcycle batteries, common letters reveal the battery series (Y, C, M), case design (TX, TXL), and technology (AGM, GEL, MF for maintenance-free). They ensure proper fit, electrical characteristics, and maintenance requirements for specific applications.

What Does YTX Mean On A Battery?
YTX designates a sealed maintenance-free AGM battery. “Y” often stands for Yuasa (or compatible design), “T” indicates the case style, and “X” shows AGM construction. This code is industry-standard for sealed, high-performance motorcycle batteries needing little to no upkeep.

What Is A YT12B-BS Battery?
A YT12B-BS battery is a sealed, AGM-type 12V motorcycle battery. “YT” signals the battery series and case style, “12B” refers to capacity and specific fitment, and “BS” means it’s a “Bottle Supplied” AGM, maintenance-free once filled and sealed.

How Does A BS Battery Compare To Yuasa?
BS batteries are valued for modern tech and affordability, while Yuasa is known for premium durability and original equipment reliability. BS provides strong performance and widespread fitment; Yuasa often offers a longer lifespan and is favored for critical applications.

What Is The Review Of BS Batteries?
Reviews show BS batteries generally earn praise for consistent power delivery, easy installation, and solid lifespan. Riders favor their maintenance-free design and value compared to premium brands, although some users reserve Yuasa for maximum longevity in demanding bikes.

Where To Find YT12B-BS Battery Near Me?
Find a YT12B-BS battery at local motorcycle shops, powersports dealers, auto parts stores, and major online retailers. Search for OEM or aftermarket brands ensuring YT12B-BS compatibility for specific motorcycles or scooters.

How Does BS Battery Compare To Yuasa On Reddit?
On Reddit, motorcyclists often describe BS batteries as a reliable, cost-effective choice, suitable for most riders. Yuasa is favored for maximum reliability and OE replacement, but BS receives positive talk for casual and budget-focused users.

What Is The CCA Rating Of A YT12B-BS Battery?
A typical YT12B-BS battery has a cold cranking amps (CCA) rating ranging from 180 to 210 CCA. This provides sufficient starting power for most midsize street bikes and scooters, ensuring quick, reliable ignition even in cool conditions.

Is YT12B-BS An AGM Battery?
Yes, a YT12B-BS is an AGM (Absorbent Glass Mat) battery, making it maintenance-free and spill-proof. Its construction supports strong, vibration-resistant performance and longer service life—key for motorcycles and scooters needing steady, reliable power.
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November 9, 2023 By 0 Comments

AGM Lead-Acid Battery Activation and Conventional Lead-Acid Battery Activation

The factory-activated (FA) type of lead-acid batteries can be used for conventional (wet/flooded) and AGM batteries, but some manufacturers offer Bottle Supplied (BS) batteries – dry batteries with their electrolyte stored in special plastic battery containers that can be added to the cells just before use.

Battery Supplied (BS) batteries have a longer shelf life and sometimes a longer operating life than Factory Activated batteries.

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How to Activate a Lead-Acid Battery?

AGM and conventional lead-acid batteries are activated using very similar procedures, depending on the battery brand and even model.

These are the general activation procedures for these battery types – before proceeding, make sure you read the instructions that came with your battery and wear safety gear (at least gloves and goggles):

How to Activate AGM Battery: Place the battery on a flat surface and remove the electrolyte containers’ caps without piercing them!

Place the electrolyte containers into the battery cell filler ports and press them to break the foil seals, which will release the electrolyte into the battery cells.

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The electrolyte containers must be emptied completely – each container contains the exact amount of battery acid, so you can speed up the process by gently tapping them periodically.

Remove the electrolyte bottles carefully and permanently close the AGM battery once they are empty.

Let the battery sit for 30-120 minutes – this will activate the batteries, which will be charged to 75-85% of their normal capacity.

If lead-acid batteries are charged to 75-85%, they can be used as cranking/starting batteries, but it is highly recommended that they be fully recharged to 100% SoC using an advanced AGM battery charger.

The dry AGM battery is now fully charged, filled with electrolyte, and ready to be used.

Few notes:

– Because AGM batteries and wet/flooded batteries use slightly different battery acids, always use the electrolyte that came with the battery.

– Whenever working with sulfuric acid, wear protective gear in a well-ventilated area.

– If you are unsure about how to perform a certain procedure, read the instructions carefully.

How to Activate a Conventional Battery: Place the conventional battery on a flat surface, and remove the sealing cap from the side – the sealing cap allows the excess gasses to escape.

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Note: some wet/flooded dry batteries are delivered with an electrolyte stored in six small containers that are used just like electrolyte containers for dry AGM batteries.

However, some wet/flooded dry batteries are delivered with just one larger electrolyte container.

When the electrolyte is delivered in a single container, open the bottle and mount a cap with a short filling tube – fill each cell to the “upper level” filling line.

Let the battery sit on a flat surface for 30-60 minutes. Gently tap the battery to help gasses vent out.

Now, refill each cell again to the “upper level” filling line with the provided electrolyte and close the cells – the battery is 75-80% charged and almost ready for use.

Before the very first use, the battery must be charged to 100% using a smart battery charger that features wet/flooded lead-acid battery charging mode.

Note: in the future, the battery should be only refilled using distilled water and NOT with the battery acid!

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Conclusion

In spite of the fact that factory activated batteries may have a shorter operating life than batteries activated before the very first use, lead-acid batteries are nasty and dangerous liquids that can cause serious injuries and damage.

If you’re looking for a good and reliable motorcycle/powersports battery, choose a Factory Activated (FA) Battery Sealed (BS) battery from a reputable battery manufacturer with several positive reviews.
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November 9, 2023 By 0 Comments

Do Motorcycles Have Alternators?

As their name implies, alternators convert mechanical energy into electrical energy through the use of alternate current. Alternators are commonly found in cars, where they are used to charge the onboard battery, which is then used to start the engine and power other electric loads. However, the question remains – do motorcycles also have alternators?

 

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Car-Style Alternator vs Stator

A car-style alternator, typically driven by a drive belt, can also serve as a power source for other devices such as a water pump or AC unit. However, it is not commonly found on motorcycles, sparking the question of whether motorcycles even have alternators at all.

Yet, despite their compact engines leaving limited space, motorcycles do in fact have alternators built within the engine itself. This takes the form of a stator with coils and outgoing wires that transfer alternate current to a diode bridge (such as a Graetz bridge) or a more advanced battery charging controller.

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The magnets on the rotor (axle of the engine) generate electricity (alternate current) in the stator coils as the engine spins, which is then transferred to the outside using wires. To reduce radio interferences and stabilize the voltage, a diode bridge (Graetz bridge) rectifies AC current into DC current, which is then filtered further with a few capacitors.

In the end, the motorcycle battery itself stabilizes the voltage to its final value.

Note: Several motorcycles have diode bridges within the engine, but because the diode bridge may be difficult to repair in such a location, many models have diode bridges outside the engine – this also contributes to cooling. In addition to more stable output voltages, modern bikes also feature more complex charging controllers.

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Conclusion

A motorcycle usually does not have an alternator like a car – instead, it comes with stators that produce electricity as soon as the engine is started, thanks to the magnets on the rotor. Motorcycles have alternators, but not car-style ones.
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November 9, 2023 By 0 Comments

Which Battery Fits Best for Powersports, ATVs, and Motorcycles?

A battery cross reference chart helps riders easily find compatible batteries for powersports, ATVs, and motorcycles by matching sizes, cold cranking amps (CCA), and terminals. It simplifies choosing the right lithium or lead-acid battery, ensuring optimal performance and longevity across brands and models.

How Does a Battery Cross Reference Chart Simplify Choosing Powersports Batteries?

A battery cross reference chart matches batteries’ physical dimensions, terminal types, and electrical specs, simplifying the selection process for powersports vehicles. It helps users identify equivalent batteries across brands, preventing compatibility issues and ensuring reliable starts.

Battery compatibility depends on size group, CCA rating, voltage, and terminal layout. Charts consolidate this info, allowing riders to swap out brands or upgrade technologies without guessing. For example, an AGM battery can replace a flooded type if specifications match. This tool reduces trial and error, saves money, and boosts confidence in battery maintenance.

What Are the Key Specifications to Compare in ATVs and Motorcycle Batteries?

The key specs include battery group size, voltage (usually 12V), CCA, reserve capacity, and terminal position. These ensure fit and enough power to start engines, especially in cold conditions.

Group size dictates physical fit in the battery compartment. Voltage must match vehicle requirements. Cold cranking amps measure starting power—critical for engines exposed to cold. Terminal type/placement affect cable connections. Reserve capacity indicates how long the battery can power the system if the alternator fails. Matching these specs maintains engine reliability and battery lifespan.

Which Battery Types Are Best for Powersports, ATVs, and Motorcycles?

Lithium Iron Phosphate (LiFePO4) and sealed Absorbent Glass Mat (AGM) batteries are increasingly preferred due to low maintenance, high performance, and long life. Conventional flooded lead-acid batteries are still common but less durable.

LiFePO4 batteries from manufacturers like Redway Battery provide lightweight, stable power with faster recharging and deeper discharge capabilities. AGM batteries offer good vibration resistance and leak-proof design, ideal for rough terrains. Choosing the right chemistry depends on budget, performance needs, and maintenance preferences.

Why Is It Important to Consider Cold Cranking Amps (CCA) in Battery Selection?

CCA rating indicates the battery’s ability to provide sufficient power to start the engine at low temperatures. Selecting a battery with inadequate CCA can lead to starting failures in cold weather.

Powersports vehicles often operate outdoors in variable climates. A high CCA ensures the battery delivers enough current for quick starts under stress. Using a cross reference chart helps confirm replacement batteries meet or exceed the original CCA specifications, ensuring reliable operation year-round.

Where Can Riders Find Reliable Battery Cross Reference Charts?

Reliable battery cross reference charts are available from battery manufacturers, specialized retail sites, and OEM service guides. Brands like Redway Battery publish detailed cross references to assist customers in selecting compatible lithium and lead-acid batteries.

Authorized dealers and well-known powersports forums often host interactive charts. Some retailers provide app-based tools enabling users to enter vehicle info and get instant compatible battery matches. Checking multiple sources and official manufacturer charts ensures accuracy and reliability.

How Can Riders Maintain Lithium Batteries for Powersports and Motorcycles?

Proper maintenance includes keeping batteries clean, charged, and stored in a cool, dry place. Regular voltage checks and avoiding deep discharges extend lithium battery life.

Unlike flooded batteries, lithium packs like those from Redway Battery require minimal maintenance but benefit from periodic balance charging. Avoid extreme temperatures and vibrations, use compatible chargers, and disconnect during long inactivity. Following manufacturer instructions helps maximize lifespan and performance.

Does Using a Lithium Battery Affect Vehicle Performance?

Yes, lithium batteries often improve vehicle performance by reducing weight, providing consistent voltage, and enhancing cold-weather starts. They also have longer cycle life compared to traditional lead-acid types.

Lightweight lithium batteries contribute to better handling and fuel efficiency. Their ability to sustain voltage under load delivers stable electrical output for lights and electronics. Rapid recharge capability reduces downtime. These performance benefits make lithium an attractive upgrade for powersports and motorcycle enthusiasts.

What Are Common Battery Group Sizes for Powersports, ATVs, and Motorcycles?

Common group sizes include 24, 30, 34, 35, YTX7L, and YTX9L, among others. These denote standardized dimensions and terminal layouts ensuring fitment.

For example, YTX7L is typical for many small motorcycles and ATVs, while Group 24 or 30 batteries suit larger powersports vehicles. Cross reference charts detail which brands and models share these sizes, helping users find exact or equivalent replacements.

Who Should Consider Customized Battery Solutions for Powersports Vehicles?

Riders or fleet operators using specialized equipment or devices requiring precise power delivery should consider custom battery solutions. Redway Battery offers OEM/ODM customization for unique voltage, capacity, or form factor needs.

Customized packs can optimize space utilization, improve thermal management, and integrate better with vehicle electronics. Fleets or aftermarket modifiers seeking high reliability and performance gain advantages from tailored battery designs meeting exact application demands.

When Is the Best Time to Replace a Powersports Battery?

Replace batteries when they show signs of failure such as slow cranking, dim lights, or frequent recharge needs, typically every 3-5 years. Lithium batteries may last longer but still degrade over time.

Seasonal maintenance or pre-ride checks are ideal to gauge battery health. Using a cross reference chart before replacement ensures correct fit and specs. Upgrading to lithium models during replacement can provide immediate performance benefits.

Redway Expert Views

“Selecting the right battery goes beyond matching physical size; it’s about understanding the chemistry, power demands, and lifestyle of powersports enthusiasts,” explains the engineering team at Redway Battery. “Our focus on high-quality LiFePO4 batteries ensures durable, safe, and customizable power solutions that enhance rider experience and reduce downtime. Riders seeking reliability trust Redway not only for product performance but also for our commitment to innovation and service excellence.”

Conclusion

Understanding how to use a battery cross reference chart for powersports, ATVs, and motorcycles simplifies selecting the right replacement battery. Paying attention to specifications like group size, CCA, and chemistry ensures compatibility and performance. Lithium batteries, such as those from Redway Battery, offer superior longevity and reliability. Proper maintenance and timely replacement further safeguard your vehicle’s operation. Always consult reliable charts and trusted manufacturers like Redway Battery for the best battery solutions.

FAQs

Q1: Can I replace a lead-acid battery with a lithium battery in my ATV?
Yes, if the lithium battery matches the voltage, size, and terminal configuration, it can be a superior replacement offering better performance and lifespan.

Q2: How often should I check my powersports battery’s health?
Check at least once per riding season or every 3-6 months to avoid unexpected failures.

Q3: Does using a cross reference chart guarantee perfect battery fit?
It significantly reduces errors but verifying physical dimensions and terminal positions before purchase is recommended.

Q4: Are lithium batteries safe for extreme weather?
Yes, especially LiFePO4 types, which handle temperature extremes better than traditional lead-acid batteries.

Q5: Where can I buy Redway Battery products?
Redway Battery products are available worldwide via authorized distributors and OEM partnerships ensuring quality and warranty support.

BCI Battery Group Size Chart - BCI Battery Knowledge
Knowledge
November 9, 2023 By 0 Comments

BCI Battery Group Size Chart – BCI Battery Knowledge

The exact BCI group battery size can be useful in finding new battery replacements, but just knowing the group size is not enough.

Batteries differ in their:

  • purpose: starting, dual-purpose, deep cycle,
  • chemistry: lead-acid, NiCd, NiMH, lithium,
  • battery terminals: F1, F2, SAE, marine, threaded,
  • terminal orientation: positive left, positive right, side terminals, etc.

Battery maintenance, housing material, strap-down system, and other important information are also included.

It is extremely helpful to know all of this information in order to find a proper battery replacement.

Most Popular Battery Groups

The most popular battery groups and their dimensions in inches and centimeters are:

Most Popular Battery Groups

 

The new battery must have the same chemistry as the old one (or it must be a verified “drop-in replacement” battery) and the same or better electrical features.

Battery Groups Sizes Chart

Below is a chart that shows the most common sizes of BCI batteries.

Note: we have really tried to verify the information provided in this table, but there are no warranties of any kind. Also, for the full list of motorcycle and similar batteries, please check our Powersports, ATV, and Motorcycle Battery Cross Reference Chart page.

Battery Groups Sizes Chart

Battery Groups Sizes Chart

Battery Groups Sizes Chart

Battery Groups Sizes Chart

Battery Groups Sizes Chart

Battery Groups Sizes Chart

Many BCI battery groups differ by only a fraction of an inch, and they can be used interchangeably if and only if the new battery:

  • can fit your battery compartment with properly oriented terminals,
  • have the same or better specifications/features than the old battery,
  • can be properly charged.

Even then, be sure to check with professionals if the replacement with another battery group is a safe option. If not, the operation of the new battery may cause damage, injuries, or even worse …

BCI Battery Groups, DIN, and EN Codes Cross Reference Chart

The following cross-reference chart lists the most popular BCI battery groups and their DIN and EN equivalent codes:

BCI Battery Groups, DIN, and EN Codes Cross Reference Chart

BCI Battery Groups, DIN, and EN Codes Cross Reference Chart

This cross-reference chart lists ‘only’ the battery dimensions and not the orientation of their terminals, terminal types, base hold-down type, lifting edge, and other ‘little,’ but sometimes very important details.

Most of the battery groups in the list feature very similar dimensions, except for two models, BCI Group 48 and BCI Group 49.

For example, BCI Group 48 batteries feature physical dimensions of 278 x 175 x 192 mm, with the positive terminal location: Right. BCI Group 48 batteries are considered to be equivalent to the DIN/EN battery groups labeled as H6, L3, and 66L3, with physical dimensions of 278 x 175 x 190 mm, with the positive terminal location: Right.

However, BCI Battery Group 98R batteries feature physical dimensions of 283 x 175 x 190 mm, with the positive terminal location: Right, and are also a good match to the DIN/EN battery groups labeled as H6, L3, and/or 66L3 – Group 98R batteries are ~5 mm longer than H6 batteries, but they generally can fit the battery compartments intended for H6 batteries.

Again, when replacing your battery on your own, always check the actual battery size and measure your battery compartment. Also, check battery orientation, terminal types, hold-down system, etc.

Small 12V Deep Cycle/General Purpose Batteries

Small 12V deep cycle/general purpose batteries are mostly Sealed Lead-Acid (SLA) or Lithium Iron Phosphate (LiFePO4) batteries, typically used in UPS devices, alarms, toys, wheelchairs, and similar.

Most popular models are batteries with smaller capacities, usually up to 30-35Ah, where standard Group U1 and U1R batteries kick in.

If you are looking for even larger deep cycle/general purpose batteries, consider one of the larger battery groups, like groups 24, 27, 31, etc.

The following comparison chart lists some of the most popular small 12V general-purpose batteries with their dimensions and terminals.

Small 12V Deep Cycle/General Purpose Batteries

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As one can see, the physical dimensions of some battery groups overlap, thanks to advancements in battery technology. For example, 12V 7Ah and 12V 9Ah batteries have the same dimensions, but they differ in chemistry (lead-acid, lithium), capacity (7-10Ah), and battery terminals (F1, F2). So, when looking for a new battery, check the old one and write down its voltage, capacity, terminal, chemistry, and dimensions.

Also, many batteries of the same size and capacities are offered with different battery terminals, for example, F1 and F2 – that is why we had to add “(mostly)” in many battery groups. However, just like there are many different battery terminals, there are also many battery terminal adapters – for example, battery adapters “F1 to F2” and “F2 to F1” are rather common and can be found at many online shops and hardware stores.

Here is the list of our BCI Group Battery Size articles, ordered according to the date added/updated:

Group 78 Batteries – Dimensions, Features, and Recommendations

BCI Group 78 batteries is a group of car and light truck batteries that are also used in marine and light industrial applications as starting and as general, dual-purpose batteries.
BCI Group 78 batteries are often used in ‘Stop-and-Go’ automotive applications, requiring the batteries to provide large currents very often and to be recharged quickly – such applications require tough and durable, high-quality batteries.

Group 78 Batteries - Dimensions, Features, and Recommendations

Group 94R (H7, L4, 77L4) Batteries – Dimensions, Features and Recommendations

BCI Group 94R batteries are very popular automotive and light industrial batteries commonly used on passenger, SUV, luxury, and light commercial vehicles. BCI Group 94R batteries are also known as H7, L4, and LN4 batteries.
They are often installed on vehicles manufactured by BMW, Mercedes, Audi, Volkswagen, etc. As such, BCI Group 94R batteries are designed to be maintenance-free batteries, to be able to provide a strong starting current even in low-temperature conditions, to accept charge quickly, to power a broad range of onboard electronics, to endure automatic start-stop applications, etc.

Group 94R (H7, L4, 77L4) Batteries - Dimensions, Features and Recommendations

Group 65 Batteries – Dimensions, Features, and Recommendations

BCI Group 65 batteries are commonly used as automotive, marine, and industrial batteries. They are mid-size batteries, often designed as dual-purpose AGM batteries suitable as both starting and deep cycle batteries, thanks to the advances in AGM SLA battery technology.
Generally, group 65 batteries feature 70-75 Ah 20h capacity, 130-150 minutes RC, 750-950 CCA, with the MCA values of some models reaching almost 1100 Amps. Also, they usually weigh between 45 and 55 pounds (20 – 25 kg).

Group 65 Batteries - Dimensions, Features, and Recommendations

BCI Group 96R Batteries – Dimensions, Features, and Recommendations

BCI Group 96R Batteries are almost exclusively used as starting batteries in cars and other similar applications where affordable and reliable starting batteries that can provide 500-600 CCA are required. As such, most BCI group 96R batteries are wet/flooded lead-acid batteries, with only a very few AGM, Gel-Cell, or lithium batteries being present on the market. If such batteries are required, one must look for AGM, Gel-Cell, and/or lithium batteries of similarly sized BCI groups, taking into account battery size, capacity, terminal types, terminal orientation, hold-down type/shape, etc.

BCI Group 96R Batteries - Dimensions, Features, and Recommendations

Groups U1 and U1R Batteries – Dimensions, Features, and Recommendations

BCI Groups U1 and U1R batteries are general-purpose batteries often used in medical and security applications, in wheelchairs, electric scooters, golf carts, lawnmowers, and other garden tools, camping, etc.
BCI group U1 and U1R batteries are mostly AGM and Gel-Cell batteries, with wet/flooded batteries being phased out. Also, lithium-ion U1 batteries are appearing on the market, offering higher capacity, a larger number of charging/discharging cycles, and lower weight, but they also cost more, at least initially.

Groups U1 and U1R Batteries - Dimensions, Features, and Recommendations

Group 75 Batteries – Dimensions, Features, and Recommendations

BCI Group 75 batteries are automotive and light industry batteries, designed mostly as starting or dual-purpose batteries with very good starting features.
As such, BCI Group 75 batteries are commonly used in cars, light trucks, and other vehicles, where they are used for starting internal combustion engines but also for powering various other loads like pumps, winches, lights, etc.

Group 75 Batteries - Dimensions, Features, and Recommendations

Group 31 Batteries – Dimensions, Features, and Recommendations

Group 31 batteries are relatively large and powerful batteries, featuring 20h capacity in 75-125 Ah range, providing 750-1250 CCA, 150-250 minutes RC, etc. Their physical dimensions are approximately 13 x 6 13/16 x 9 7/16 inches (~13 x 6.8 x 9.44 inches, 330 x 173 x 240 mm), while their features depend on the battery design, intended use, chemistry, and similar.
Group 31 batteries are very common in marine, automotive, off-the-grid, and similar applications, making them one of the most popular battery groups.

Group 31 Batteries - Dimensions, Features, and Recommendations

Group 41 (T65, 54LB) Batteries – Dimensions, Features, and Equivalents

Group 41 (T65, 54LB) batteries are a type of automotive starting, lighting, and ignition (SLI) battery. These batteries are designed to deliver a high starting current to crank the engine and recharge quickly. Also, Group 41 batteries are used in light industrial and marine applications where 600-650 CCA batteries are required.

Group 41 (T65, 54LB) Batteries - Dimensions, Features, and Equivalents

Group 48 (H6, L3, 66L3) Batteries – Dimensions, Features, and Recommendations

Group 48 (H6, L3, 66L3) batteries are mid-range batteries commonly used as automotive, marine, and light industrial batteries, as starting or dual-purpose batteries, and for powering various electric and electronic devices while the main engine(s) are turned off or while the mains power is not present.
Most BCI Group 48 (H6, L3, 66L3) batteries are designed as maintenance-free, spill-proof AGM batteries with increased resistance to vibrations and mechanical shocks (when compared with the older wet/flooded lead-acid batteries).

Group 48 (H6, L3, 66L3) Batteries - Dimensions, Features, and Recommendations

Group 34 Batteries – Dimensions, Features, and Recommendations

Group 34 batteries are medium-large but still rather powerful batteries, featuring 20h capacity in the 50-75 Ah range, providing 750-900 CCA, 100-145 minutes of Reserve Capacity, etc. Their weight depends on the chemistry, battery type, and internal construction, and it ranges between 37 and 51 pounds (16.8 – 23.1 kg).
BCI group 34 batteries are commonly used in automotive, marine, industrial, and off-the-grid applications in the form of starting, dual-purpose, and deep cycle batteries, offering good starting/cranking characteristics, a large number of charging/discharging cycles and excellent deep cycle recovery – battery type-dependent, of course.

Group 34 Batteries - Dimensions, Features, and Recommendations

Group 47 (H5, L2, 55L2) Batteries – Dimensions, Features, and Recommendations

Group 47 (H5, L2, 55L2) batteries are medium size batteries, mostly used in automotive and light industrial applications as cranking or dual-purpose batteries for starting mid-range diesel and gas engines and for powering various electric and electronic devices while the main engine(s) are turned off.
Most BCI Group 47 (H5, L2, 55L2) batteries are designed as spill-proof, maintenance-free AGM batteries, but there are also other models on the market as well.

Group 47 (H5, L2, 55L2) Batteries - Dimensions, Features, and Recommendations

Group 95R (H9/L6) Battery: The Complete Guide

Group 95R (H9/L6) batteries are very popular automotive batteries typically used in cars like SUVs, sedans, pickups, etc.
Thanks to their size, capacity, and ability to crank large internal combustion engines, group 95R (H9/L6) batteries are also used as light industrial starting/dual-purpose batteries and as needed, for example, in emergencies, as backup batteries, in medical and security systems, etc. But, group 95R (H9/L6) batteries are most commonly used as automotive batteries.

Group 95R (H9/L6) Battery: The Complete Guide

Group 24 Batteries – Dimensions, Features, and Recommendations

BCI Group 24 batteries are mostly general-purpose batteries commonly found in large UPS systems, medical and security systems, wheelchairs, in vehicles, industrial applications, etc. They are rarely used as starting/cranking batteries – more commonly, they are used in deep cycle standby/float applications.
These mid-size batteries feature several subgroups, differing slightly in their dimensions – one must be careful which battery is required since even the slightest size differences may cause the battery not to fit its compartment.

Group 24 Batteries - Dimensions, Features, and Recommendations

Group 35 Batteries – Dimensions, Features, and Recommendations

BCI Group 35 batteries are very popular battery size of lead-acid batteries, commonly used in cars, trucks, RVs, and other similar applications as starting or dual-purpose batteries.
These batteries, especially dual-purpose and deep cycle batteries, are often used in other applications as well, like UPS batteries, wheelchair batteries, security system backup batteries, medical applications, off-the-grid, etc.
The most popular BCI Group 35 batteries are Absorbent Glass Mat (AGM) Sealed Lead Acid (SLA) batteries, but lithium iron phosphate (LiFePO4) batteries are slowly entering the market, especially for dual-purpose applications.

Group 35 Batteries - Dimensions, Features, and Recommendations

Group 58 and 58R Batteries: Alternatives and Recommendations

Group 58 and 58R batteries are mid-size cranking batteries used in some passenger cars, sedans, SUVs, and even boats as affordable and reliable Starting, Lighting, and Ignition (SLI) battery.
Group 58 and group 58R batteries share the same dimensions but different battery terminal orientations. Also, many brands that offer both group 58 and group 58R batteries offer batteries that are internally different – group 58R batteries often have better discharge characteristics than group 58 batteries.

Group 58 and 58R Batteries: Alternatives and Recommendations

Group 49 (H8, L5, 88L5) Batteries – Dimensions, Features, and Recommendations

BCI Group 49 or Group H8 are very popular car/truck batteries, commonly used not only as starting/cranking batteries but also as dual-purpose batteries, used for powering various loads while the main engine is turned off, like various winches, pumps, multimedia devices, etc.
While BCI Group 49 and Group H8 (or Group L5 or Group 88L5) are considered interchangeable, there are a few important differences one has to know before buying any of these batteries.

Group 49 (H8, L5, 88L5) Batteries - Dimensions, Features, and Recommendations

Group 4D, 6D, and 8D Batteries – Dimensions, Features, and Recommendations

BCI Group 4D, 6D, and 8D batteries are large and heavy commercial batteries, often used for off-the-grid applications, as solar batteries, as RV house batteries, for security, medical and standby applications, for powering various industrial vehicles and applications, etc.
BCI Group 4D, 6D, and 8D lead-acid batteries were commonly Absorbent Glass Mat (AGM) or Gel-Cell Sealed Lead Acid (SLA) batteries, but are now being phased out in favor of Lithium Iron Phosphate (LiFePO4) 4D, 6D, and 8D batteries.
But, AGM and Gel-Cell lead-acid batteries are still going on strong in applications where lightweight design and high cycling abilities are not of greatest importance.

Group 4D, 6D, and 8D Batteries - Dimensions, Features, and Recommendations

Group 8D Batteries - Dimensions, Features, and Recommendations

BCI Group 85 and Group 86 Batteries – Dimensions, Features, and Recommendations

BCI Group 85 and Group 86 batteries share the very same physical dimensions, with the only difference being the battery terminals orientation.
BCI Group 85 and 86 batteries are designed mostly as starting/cranking batteries and are, as such, commonly used in automotive and marine applications for starting smaller and mid-range gas and diesel engines.

BCI Group 85 and Group 86 Batteries - Dimensions, Features, and Recommendations

BCI Group 22NF Battery

BCI Group 22NF battery is a general-purpose mid-range battery used as backup/standby battery, wheelchair battery, trolling motor battery, off-the-grid battery, as starting battery for smaller gas and diesel engines, and similar.
As such, 22NF battery is manufactured by many battery brands as wet/flooded, AGM, Gel-Cell lead-acid battery. Also, lithium 22NF batteries are also emerging on the market, offering great weight savings and other benefits.

BCI Group 22NF Battery

Group 26 And Group 26R – Dimensions and Features

BCI Group 26 and BCI Group 26R batteries are mid-range starting batteries used very often in cars, SUVs, smaller trucks, power generators, smaller boats, etc.
BCI Group 26 and 26R batteries feature practically the same dimensions, electric features, and terminal types, with the only difference being terminal orientation.

Group 26 And Group 26R - Dimensions and Features

Groups 51 and 51R Batteries – Dimensions, Features and Recommendations

BCI Groups 51 and 51R batteries are very popular automotive starting and dual-purpose batteries, and are often being used as general-purpose/auxiliary batteries in various applications requiring stable and reliable power sources.
Although Groups 51 and 51R batteries have their size defined, their size tends to vary a little bit – some manufacturers optimized their batteries for certain applications, and make them slightly smaller (easier fit) or even larger (better performances). So, before ordering a certain model, check the actual size of the battery and the size of your battery compartment.

Groups 51 and 51R Batteries - Dimensions, Features and Recommendations

Group GC8 and Group GC8H – 8 Volt Golf Cart Batteries

BCI Group GC8 and Group GC8H batteries are heavy-duty, deep cycle batteries, very similar to GC2 and GC2H batteries.
BCI Group GC8 and Group GC8H batteries are often used as deep cycle batteries in golf carts, but also in marine applications, off-the-grid applications, for powering medical and security systems, and similar.

Group GC8 and Group GC8H - 8 Volt Golf Cart Batteries

Group GC2 and Group GC2H – 6 Volt Golf Cart Batteries

BCI Group GC2 and Group GC2H batteries are heavy-duty, deep cycle batteries commonly used in golf carts and other automotive applications. Also, they are often used as deep cycle batteries in marine applications, off-the-grid applications, for powering medical and security systems, and similar. Although they are by definition 3-cell 6V batteries, GC2 and GC2H batteries are sometimes offered as 12V batteries (mostly lithium 4-cell batteries) for building 24V, 36V, and 48V battery packs with fewer batteries.

Group GC2 and Group GC2H - 6 Volt Golf Cart Batteries

Group GC12 Batteries – 12 Volt Golf Cart Batteries

BCI Group GC12 batteries are deep cycle, heavy-duty batteries, intended for automotive, off-the-grid, and light industrial applications where strong and durable batteries are required as reliable sources of energy.
GC12 batteries are also known as 12V golf cart batteries, but they are also commonly used as trolling motor batteries, RV house batteries, power inverter batteries, in medical and security systems, etc.

Group GC12 Batteries - 12 Volt Golf Cart Batteries

Group 27 Batteries – Dimensions, Features, and Recommendations

Group 27 batteries are rather large and powerful batteries, featuring 20h capacity in 66-110 Ah range, providing 600-1000 CCA, 140-220 minutes RC, etc. Their weight depends on the internal construction and it ranges between 54 and 70 pounds (24.5 – 32 kg).
Group 27 batteries’ physical dimensions depend on the exact battery group because there are three different, although very similar battery groups: Group 27, Group 27F, and Group 27H, although they are often labeled as Group 27 Batteries.

Group 27 Batteries - Dimensions, Features, and Recommendations

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