Redway Battery (US)


12V 18Ah Factory Lithium LiFePO4 Battery

12V 18Ah Factory Lithium LiFePO4 Battery

Production Info

✅ High Quality

✅ Advance Feature

✅ Super Demand

✅ Reasonable

✅ Long Lasting

✅ Good


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Thanks to its exceptional performance, toughness, and safety features, Redway’s 12V18Ah LiFePO4 battery is a great option for a variety of applications.


One of the most important advantages of the 12V18Ah battery is its high energy density. Due to its compact and lightweight design, it is an excellent option for applications with limited space. Due to its ability to deliver high current levels, it is a perfect option for high-power applications.

This battery from Redway has a long cycle life, so you can charge and discharge it several times without losing capacity. Due to its reliability and long-lasting power supply, it is ideal for backup power, electric cars, and solar power systems.

Besides being extremely safe, the Redway 12V18Ah battery has a high energy density and a long cycle life. A LiFePO4 battery is one of the safest battery technologies available today, making it a reliable and secure option for any application. Compared to other lithium-ion chemistries, it has far fewer thermal runaway problems and other safety issues.

In addition to its versatility, the 12V18Ah battery can be used for electric bicycles, scooters, wheelchairs, solar power systems, backup power systems, and many other devices. As it can be coupled in series or parallel to enhance its capacity or voltage output, it is a versatile energy storage solution for various energy storage requirements.

A major advantage of the Redway 12V18Ah battery is its exceptional cost-effectiveness. With its outstanding value for money, it is an excellent choice for any application that requires dependable and effective energy storage. As the battery has a long cycle life and superior safety features, it will be cost-effective over time since it requires less maintenance and replacement than other battery technologies.

In summation, Redway’s 12V18Ah LiFePO4 battery is a high-performance and cost-efficient choice for energy storage. It has a great energy density, extended life span, and top-notch safety features that guarantee its reliability in all applications where dependable power is needed – from backup power systems to solar panels, electric cars, and beyond. This highly flexible battery certainly provides excellent value for money.

Product Specifications:

Cell Type: LiFePO4
Nominal Capacity: 18 Ah
Nominal Voltage: 12.8 V
Norminal Energy: 230.4 Wh
Series / Parallel Number: 4S3P
Maximum Charge Current: 15A
Maximum Discharge Current: 15 A
Dimension (L*W*H): 180 x 76 x 165 mm
Charge Voltage/ Charge Cut-off Voltage: 14.6 +- 0.2 V
Discharge Cut-off Voltage: 10 V
Terminal: M5
Operating Temperature and Humidity Range: Charge: 0°C -60°C Discharge: -20°C -65°C
Max. Parallel Connection: non support
Protection Level: IP66


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Technical Data

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Parameter Value
Cell Type LiFePO4
Nominal Capacity 18 Ah
Nominal Voltage 12.8 V
Nominal Energy 230.4 Wh
Series / Parallel Number 4S3P
Maximum Charge Current 15A
Maximum Discharge Current 15 A
Dimension (LWH) 180 x 76 x 165 mm
Charge Voltage/ Charge Cut-off Voltage 14.6 +- 0.2 V
Discharge Cut-off Voltage 10 V
Terminal M5
Operating Temperature and Humidity Range Charge: 0°C -60°C Discharge: -20°C -65°C
Max. Parallel Connection non support
Protection Level IP66
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How long will a 12V 18Ah lithium battery last?

A 12V 18Ah lithium battery can last about 20 hours powering a device drawing 0.9 amps, but this varies based on usage. Lithium batteries typically last 3 to 5 years. Proper charging practices help prolong their lifespan. Factors like temperature and usage patterns also affect battery life.

Let’s simplify:

1. Duration of Use:

  • A 12V 18Ah lithium battery can power devices for around 20 hours when they draw 0.9 amps of current.
  • However, this duration may vary based on factors like the device’s energy needs and how quickly the battery drains.

2. Lifespan of Lithium Batteries:

  • Typically, lithium batteries last between 3 to 5 years before needing replacement.
  • Proper charging practices, like avoiding deep discharges, can help extend their lifespan.

3. Additional Considerations:

  • Various factors such as temperature and usage patterns can affect how long the battery lasts in real-world scenarios.
  • It’s crucial to keep these factors in mind when estimating the lifespan of a 12V 18Ah lithium battery.

How long does it take to charge a 12V 18Ah battery?

Charging a 12V 18Ah battery varies with the charging amperage:

  • At 1A: About 60 hours
  • At 2A: Around 30 hours
  • At 4A: Takes about 15 hours
  • At 6A: Approximately 10 hours
  • At 8A: Takes about 7.5 hours
  • At 10A: Approximately 6 hours

Factors like battery age and charger quality affect charging time. Ensure proper charging practices for optimal performance.

Why is my 12v 18Ah lithium battery not charging?

If your 12V 18Ah lithium battery isn’t charging, check for issues like using the correct charger voltage, overheating from improper charging conditions, damaged cables or ports, or activated battery safeguards. Troubleshoot by ensuring proper connections and conditions for safe charging.

Let’s break down possible reasons and solutions:

  1. Check Charger Compatibility: Ensure the charger matches your battery’s voltage requirement. Using the wrong charger can prevent effective charging.
  2. Prevent Overheating: Charge your battery in a cool, well-ventilated area to avoid overheating issues. High temperatures can disrupt the charging process and affect battery performance.
  3. Inspect Cables and Ports: Look for any damage or wear on the charging cables and ports. Faulty connections can hinder charging progress, so repair or replace damaged components as needed.
  4. Consider Battery Safeguards: Built-in protection mechanisms may activate to prevent overcharging or damage. While they’re essential for safety, ensure they’re not mistakenly engaged, preventing charging.

What is the maximum charging current for a 12V 18Ah battery?

When charging a 12V 18Ah battery, the ideal current ranges from 1.8 to 4.5 amps, depending on its capacity. Follow manufacturer guidelines for best results. Remember, the minimum charge is 10% of its capacity, around 1.8 amps. Ensure safe and efficient charging by adhering to these recommendations.

  1. Ideal Charging Current Range: When charging this battery, the best current level falls between 1.8 and 4.5 amps. This range ensures efficient and safe charging.
  2. Minimum Charge Requirement: To start charging, the battery needs at least 10% of its capacity, which equals about 1.8 amps. This ensures the battery receives enough power to begin the charging process.
  3. Manufacturer’s Guidelines: It’s crucial to follow the guidelines provided by the battery manufacturer. These instructions help ensure proper charging, extending the battery’s lifespan and performance.

What is the difference between 12V 18Ah and 100Ah battery?

Discover the contrast between a 12V 18Ah battery and a 12V 100Ah battery. The 18Ah variant suits smaller devices and offers moderate power, while the 100Ah version is ideal for larger systems with higher energy demands. While the 18Ah battery holds approximately 216 watt-hours, the 100Ah battery stores a substantial 1200 watt-hours, making it suitable for extended usage in applications like solar setups and RVs.

Let’s break down the differences between a 12V 18Ah battery and a 12V 100Ah battery in simple terms:

  1. Capacity:
    • The 18Ah battery can provide a moderate amount of power, while the 100Ah battery offers significantly more power due to its larger capacity.
  2. Power Output:
    • The 18Ah battery can handle smaller devices, while the 100Ah battery is suitable for larger systems like solar setups and RVs, providing more sustained power.
  3. Use Cases:
    • The 18Ah battery is ideal for portable electronics, while the 100Ah battery is better suited for off-grid power solutions and larger applications.

In summary, the 100Ah battery is bigger and more powerful, catering to larger energy needs, while the 18Ah battery is smaller and suitable for smaller devices.

Can a 12V 18Ah lithium battery be used as a deep cycle battery?

Certainly! A 12V 18Ah lithium battery can be used as a deep cycle battery. Deep cycle batteries are designed for repeated charging and discharging, making them ideal for applications like solar energy systems and RVs. Lithium batteries offer advantages like lightweight design and longer lifespan. It’s important to follow proper charging guidelines and safety precautions for optimal performance and safety.

Let’s break down the idea of using a 12V 18Ah lithium battery as a deep cycle battery in simple terms:

  1. Understanding Deep Cycle Batteries:
    • Deep cycle batteries act like big energy tanks for long-term use. They’re great for things like storing solar power or running stuff on boats and RVs for a while.
  2. Advantages of Lithium Batteries:
    • These lithium batteries, like the 12V 18Ah ones, are super cool because they’re lightweight and last a long time. That means less hassle and more power when you need it.
  3. Using Lithium Batteries Right:
    • To get the most out of your lithium battery, treat it nicely. Don’t drain it all the way, charge it up properly, and keep an eye on how hot or cold it gets. Safety stuff like using a Battery Management System (BMS) is also smart to do.

So, if you’re thinking of using a 12V 18Ah lithium battery for deep cycle stuff, just remember to take care of it, and it’ll take care of your power needs!

Do 12V 18Ah LiFePO4 batteries need a special charger?

LiFePO4 batteries, like 12V 18Ah ones, require a specific charger for safe and efficient charging. Using chargers designed for lithium batteries, such as the LiFe Charger Series from Power Sonic, is recommended. Ensure the charger matches the battery’s specifications to avoid damage. Optimal charging within 12 hours after use maintains battery health. Check battery voltage before charging if left unused for more than 12 hours.

Here’s what you need to know:

1. Special Charger Needed: LiFePO4 batteries require a charger designed specifically for them due to their unique voltage and charging requirements.

2. Optimal Charging Time: It’s recommended to charge the battery within 12 hours after use to maintain its health and performance.

3. Voltage Check: If the battery remains unused for more than 12 hours, it’s essential to test its voltage before charging. If the voltage is below 8.0V, refrain from charging and instead place the battery in isolation to prevent any potential hazards.

Following these guidelines ensures your LiFePO4 battery stays in good condition and operates safely.

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