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Battery Group Size Chart Guide

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Battery Group Size Chart Guide: Understand the significance of battery group sizes for optimal car performance. Charts categorize batteries by dimensions, ensuring proper fit. Incorrect sizes lead to poor connections and charging system issues. Refer to your car manual or consult professionals for accurate sizing. Choose wisely for longevity and reliability.

Battery Group Size Chart Guide

Understanding the Battery Group Size Chart

Understanding the battery group size chart is crucial for picking the right car battery. This chart categorizes batteries by their dimensions to ensure they fit your vehicle properly.

  1. Meaning of Battery Group Size Chart: The chart standardizes batteries based on size and terminal placement, indicating length, width, height, and polarity. Each number signifies a different set of dimensions, with larger numbers denoting larger batteries.
  2. Choosing the Right Size: Smaller vehicles like compacts need smaller group sizes for a snug fit, avoiding issues from too-large or too-small batteries. Your owner’s manual or online resources from reliable sources can help identify the right size for your vehicle.
  3. Impact of Incorrect Sizes: Incorrect sizes can lead to problems. Small batteries might not power your car enough, while large ones could damage wiring or components. Trucks and SUVs typically need larger batteries due to their greater electrical demands.
  4. Conclusion: Understanding the chart ensures you select the right battery size, avoiding performance issues and extending the battery’s lifespan. Always match the right size to your vehicle type for optimal performance.

BCI Group Numbers, and Dimensional Specifications
BCI
Group
Number
Maximum Overall Dimensions
Millimeters Inches Redway Battery Models
L W H L W H
Passenger Car and Light Commercial Batteries 12-Volt (6 Cells)
21 208 173 222 8 3/16 6 13/16 8 3/4 *
22F 241 175 211 9 1/2 6 7/8 8 5/16 *
22HF 241 175 229 9 1/2 6 7/8 9 *
22NF 240 140 227 9 7/16 5 1/2 8 15/16 *
22R 229 175 211 9 6 7/8 8 5/16 *
24 260 173 225 10 1/4 6 13/16 8 7/8 12V75Ah
12V90Ah
12V105Ah
12V100Ah
24V50Ah
24F 273 173 229 10 3/4 6 13/16 9 *
24H 260 173 238 10 1/4 6 13/16 9 3/8 *
24R 260 173 229 10 1/4 6 13/16 9 *
24T 260 173 248 10 1/4 6 13/16 9 3/4 *
25 230 175 225 9 1/16 6 7/8 8 7/8 *
26 208 173 197 8 3/16 6 13/16 7 3/4 *
26R 208 173 197 8 3/16 6 13/16 7 3/4 *
27 306 173 225 12 1/16 6 13/16 8 7/8 12V90Ah
12V105Ah
27F 318 173 227 12 1/2 6 13/16 8 15/16 *
27H 298 173 235 11 3/4 6 13/16 9 1/4 *
29NF 330 140 227 13 5 1/2 8 15/16 *
33 338 173 238 13 5/16 6 13/16 9 3/8 *
34 260 173 200 10 1/4 6 13/16 7 7/8 12V75Ah-ST
34R 260 173 200 10 1/4 6 13/16 7 7/8 *
35 230 175 225 9 1/16 6 7/8 8 7/8 *
36R 263 183 206 10 3/8 7 1/4 8 1/8 *
40R 277 175 175 10 15/16 6 7/8 6 7/8 *
41 293 175 175 11 3/16 6 7/8 6 7/8 *
42 243 173 173 9 5/16 6 13/16 6 13/16 *
43 334 175 205 13 1/8 6 7/8 8 1/16 *
45 240 140 227 9 7/16 5 1/2 8 15/16 *
46 273 173 229 10 3/4 6 13/16 9 *
47 246 175 190 9 11/16 6 7/8 7 1/2 *
48 306 175 192 12 1/16 6 7/8 7 9/16 *
49 381 175 192 15 6 7/8 7 3/16 *
50 343 127 254 13 1/2 5 10 *
51 238 129 223 9 3/8 5 1/16 8 13/16 *
51R 238 129 223 9 3/8 5 1/16 8 13/16 *
52 186 147 210 7 5/16 5 13/16 8 1/4 *
53 330 119 210 13 4 11/16 8 1/4 *
54 186 154 212 7 5/16 6 1/16 8 3/8 *
55 218 154 212 8 5/8 6 1/16 8 3/8 *
56 254 154 212 10 6 1/16 8 3/8 *
57 205 183 177 8 1/16 7 3/16 6 15/16 *
58 255 183 177 10 1/16 7 3/16 6 15/16 *
58R 255 183 177 10 1/16 7 3/16 6 15/16 *
59 255 193 196 10 1/16 7 5/8 7 3/4 *
60 332 160 225 13 1/16 6 5/16 8 7/8 *
61 192 162 225 7 9/16 6 3/8 8 7/8 *
62 225 162 225 8 7/8 6 3/8 8 7/8 *
63 258 162 225 10 3/16 6 3/8 8 7/8 *
64 296 162 225 11 11/16 6 3/8 8 7/8 *
65 306 190 192 12 1/16 7 1/2 7 9/16 *
70 208 179 196 8 3/16 7 1/16 7 11/16 *
71 208 179 216 8 3/16 7 1/16 8 1/2 *
72 230 179 210 9 1/16 7 1/16 8 1/4 *
73 230 179 216 9 1/16 7 1/16 8 1/2 *
74 260 184 222 10 1/4 7 1/4 8 3/4 *
75 230 179 196 9 1/16 7 1/16 7 11/16 *
76 334 179 216 13 1/8 7 1/16 8 1/2 *
78 260 179 196 10 1/4 7 1/16 7 11/16 12V75Ah-ST
85 230 173 203 9 1/16 6 13/16 8 *
86 230 173 203 9 1/16 6 13/16 8 *
90 246 175 175 9 11/16 6 7/8 6 7/8 *
91 280 175 175 11 6 7/8 6 7/8 *
92 317 175 175 12 1/2 6 7/8 6 7/8 *
93 354 175 175 15 6 7/8 6 7/8 *
95R 394 175 190 15 9/16 6 7/8 7 1/2 *
96R 242 173 175 9 9/16 6 13/16 6 7/8 *
97R 252 175 190 9 15/16 6 7/8 7 1/2 *
98R 283 175 190 11 3/16 6 7/8 7 1/2 *
Passenger Car and Light Commercial Batteries 6-Volt (3 Cells)
1 232 181 238 9 1/8 7 1/8 9 3/8 *
2 264 181 238 10 3/8 7 1/8 9 3/8 *
2E 492 105 232 19 7/16 4 1/8 9 1/8 *
2N 254 141 227 10 5 9/16 8 15/16 *
17HF 187 175 229 7 3/8 6 7/8 9 *
Heavy-duty Commercial Batteries 12-Volt (6 Cells)
4D 527 222 250 20 3/4 8 3/4 9 7/8 *
6D 527 254 260 20 3/4 10 10 1/4 *
8D 527 283 250 20 3/4 11 1/8 9 7/8 12V300Ah
24V150Ah
24V200Ah
48V60Ah
48V100Ah
28 261 173 240 10 5/16 6 13/16 9 7/16 *
29H 334 171 232 13 1/8 6 3/4 9 1/8 10 *
30H 343 173 235 13 1/2 6 13/16 9 1/4 10 *
31 330 173 240 13 6 13/18 9 7/16 12V105Ah
12V120Ah
12V150Ah
24V60Ah
Electric Vehicle Batteries 6-Volt (3 Cells)
GC2 264 183 270 10 3/8 7 3/16 10 5/8 *
GC2H 264 183 295 10 3/8 7 3/16 11 5/8 *


Data excerpted from the BCI Battery Replacement Data Book.
 

Note 1: The complete BCI listing includes several categories not included here: Heavy-Duty motor Coach and Bus batteries, and Special Tractor Batteries (6 and 12-volt). BCI provides configuration diagrams and performance ratings as well. Contact BCI, 401 N. Michigan ave, Chicago IL 60611-4267, (312) 644-6610 for more information.

Note 2: The maximum height includes the terminal posts. Width and length measurements are generally to the widest point, including protruding flanges, except for hold-down flanges at the bottom of the battery. See the diagrams in the BCI battery Replacement Data Book for full details.

Note 3: * Contact Redway for custom order details.

Importance of Choosing the Right Battery Group Size

Choosing the correct battery group size matters more than you might think. It impacts your car’s performance and how long components last.

  1. Impact of Wrong Size: Using the wrong battery group size leads to poor connections, reduced power, and struggles starting, especially in cold weather. It can cause vibrations that harm other car parts.
  2. Charging System Effects: Mismatched sizes affect the charging system and can lead to early failure of both the battery and alternator, impacting their ability to charge properly.
  3. System Compatibility: Each car model has specific power needs. Choosing the right group size ensures compatibility, optimizing performance and preventing potential damage to your car’s electrical system.

Selecting the right battery group size matters more than you’d expect. It affects your car’s performance and longevity, so investing time in research or seeking expert advice pays off in reliability and cost savings.

(Also Read: BCI Battery Group Size Chart Guide and BCI Group Battery Factory Wholesale)

Different Types of Car Batteries and Their Corresponding Group Sizes

Different car batteries suit different needs, and understanding their types and corresponding group sizes helps make a smart choice for your vehicle.

  1. Lead-Acid Batteries: Reliable and budget-friendly, these come in various group sizes like Group 24 or Group 31, tailored to fit your car’s dimensions and power needs.
  2. AGM Batteries: AGM batteries use a soaked mat instead of liquid electrolyte, offering top-notch performance and durability, ideal for vehicles with high electrical demands.
  3. Specialized Batteries like Lithium-Ion: Hybrid or electric cars might need lithium-ion batteries with higher energy density and longer lifespans, though they tend to be pricier.

Ensure your battery matches your vehicle’s needs by checking the manufacturer‘s recommendations or using a Battery Group Size Chart Guide. Selecting the right group size ensures peak battery performance and prevents potential damage to your car’s electrical system.

Understanding the different types of car batteries and their corresponding group sizes is essential before making a purchase. It saves money in the long run and keeps your car running smoothly.

How to Determine Your Car’s Battery Group Size

Figuring out your car’s battery group size is crucial for choosing the right battery. There are a few ways to determine this vital information.

  1. Check the Owner’s Manual: Start by consulting your car’s manual; it often specifies the recommended battery group size for your exact make and model.
  2. Inspect the Existing Battery: Look at your current battery for a label or stamp with a series of numbers and letters like 24F or H6 – these indicate the specific group size.
  3. Seek Professional Help: If needed, ask a mechanic or visit an auto parts store. They have tools and knowledge to identify the right battery group size for your vehicle.

Choosing the right battery group size matters because using the wrong size can cause electrical issues and potential damage to your car’s charging system. Make sure you get it right for optimal vehicle performance and the longevity of your car’s electrical components.

Tips for Maintaining Your Car’s Battery

Maintaining your car’s battery is crucial for its longevity and reliable performance. These simple tips can help you keep it in top shape.

  1. Regular Inspections: Check for corrosion, loose connections, and leaks regularly. Clean off dirt and debris from the terminals to ensure a good connection.
  2. Keep it Clean: Maintain optimal performance by cleaning the battery with a baking soda-water mix to remove buildup on terminals gently.
  3. Mind Electrical Use: Avoid draining the battery by minimizing use of electrical accessories when the engine is off, like leaving lights on or using power-heavy devices.
  4. Drive Regularly: Prevent decreased battery life by driving the car at least once a week for a reasonable distance to keep it charged.
  5. Temperature Protection: Extreme temperatures affect battery performance. Park in shaded areas in summer and use insulation blankets in winter.
  6. Charging System Check: Test the car’s charging system occasionally to catch any issues early and avoid problems with the battery.
  7. Learn Jump-Starting: Understand how to safely jump-start a dead battery; it’s a valuable skill for emergencies.

Maintaining your car’s battery involves more than fluid checks; caring for components like belts contributes to overall vehicle health and longevity.

FAQs

What are the battery group sizes? Battery group sizes refer to standardized classifications for automotive and marine batteries based on their physical dimensions and electrical specifications. These sizes help ensure compatibility with vehicles and equipment.

Is a group 27 battery bigger than a group 24? Generally, yes, a group 27 battery is larger than a group 24 battery in terms of both physical dimensions and capacity. Group sizes are numbered sequentially, with higher numbers typically indicating larger batteries.

Does battery group size really matter? Yes, battery group size matters as it determines whether a battery will fit in the designated battery compartment of a vehicle or equipment. Using the correct group size ensures proper fitment and electrical compatibility.

What does group size 75 mean on a battery? Group size 75 is a standardized classification for automotive batteries, indicating specific dimensions and electrical characteristics. It’s essential to match the group size with the vehicle’s requirements to ensure compatibility.

Are Group 34 and 78 batteries the same? No, Group 34 and Group 78 batteries are not the same. They differ in size, shape, and electrical specifications. Each group size is designed for specific applications and may not be interchangeable.

What happens if I use the wrong group size battery? Using the wrong group size battery can lead to improper fitment, electrical incompatibility, and potentially damage to the vehicle’s electrical system or equipment. It’s crucial to always use the recommended battery group size for your application.

Can I replace a group 24 battery with a group 27 battery? In some cases, it may be possible to replace a group 24 battery with a group 27 battery if the larger size fits within the designated battery compartment and the electrical specifications match the vehicle’s requirements. However, compatibility should be verified before installation.

What’s the difference between a Group 27 and a Group 31 marine battery? Group 27 and Group 31 marine batteries differ in size, capacity, and intended applications. Group 31 batteries are typically larger and have higher capacity compared to Group 27 batteries, making them suitable for larger marine vessels and applications with higher power demands.

How big is a group 31 battery? Group 31 batteries are larger than Group 27 batteries and have dimensions that vary depending on the manufacturer. Generally, they are approximately 13 inches in length, 6.75 inches in width, and 9.5 inches in height.

What vehicles use a group 27 battery? Group 27 batteries are commonly used in various vehicles, including boats, RVs, trucks, and some cars. They are suitable for applications requiring moderate to high electrical power.

What does a group 27 battery mean? Group 27 battery refers to a standardized classification for automotive and marine batteries, indicating specific dimensions and electrical characteristics. These batteries are commonly used in various vehicles and equipment.

How long will a group 27 deep cycle battery last? The lifespan of a group 27 deep cycle battery depends on various factors, including usage patterns, charging practices, maintenance, and environmental conditions. On average, a well-maintained deep cycle battery can last several years.

What is the most common battery group size? The most common battery group size may vary depending on the region and application. However, group sizes such as 24, 27, and 31 are among the more commonly used sizes for automotive and marine applications.

What does R mean on a battery? The “R” designation on a battery typically indicates a reverse terminal layout, where the positive and negative terminals are positioned differently compared to standard terminals. It’s essential to match the terminal layout with the vehicle’s requirements to ensure proper installation.

What is the difference between Group 27 and Group 31? Group 27 and Group 31 batteries differ in size, capacity, and intended applications. Group 31 batteries are larger and typically have higher capacity compared to Group 27 batteries, making them suitable for heavier-duty applications with higher power demands.

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