Battery Group Size Chart: How to Choose Your Battery

When you use a power device, a battery or electric supply plays an essential role in providing energy. Most of the device storage power is on the battery. So no need to explain the importance of batteries. Different categories, sizes, and groups of batteries are available in the market. 

It’s important to know about the battery groups. When you think about replacing a battery it is important to know the right battery groups.  Different types and models of batteries are available in the market. It’s necessary to pick the right one for your device or vehicle.  In this article, we talk about the battery group size chart. 

battery group size chart

Battery Dimensions According to the Group Size

We describe a battery group size chart so that you get an idea about this area. This is mandatory knowledge to choose the right battery for your devices. Actually, batteries can be categorized by their materials, use, and safety fact. 

The most common battery dimensions are listed in the following table chart:

Group SizeDimensions
Group 51 and 51R Batteries9.374 x 5.0625 x 8.8125 inches
Group 24 Batteries10.25 x 6.8125 x 8.875 inches
Group 35 Batteries9.0625 x 6.875 x 8.875 inches
Group 27 Batteries12.0625 x 6.8125 x 8.875 inches
Group 31 Batteries13 x 6.8125 x 9.4375 inches
Group 34 Batteries10.25 x 6.8125 x 7.875 inches
Group 65 Batteries12.0625 x 7.5 x 7.5625 inches
Group 78 Batteries10.25 x 7.0625 x 7.6875 inches

This chart will help you a lot to replace your battery. Follow the instructions from the manual to ensure the types of battery.

Note:  We really try a lot to give you correct information but no warranty is given by us. 

This table represents the most common BCI battery group size chart.  

BCI Group SizeDimensions  (inches)Amazon Search Link
218 3/16 x 6 13/16 x 8 3/4Group 21 Battery
21R8 3/16 x 6 13/16 x 8 3/4Group 21R Battery
22HF9 1/2 x 6 7/8 x 9Group 22HF Battery
22NF9 7/16 x 5 1/2 x 8 15/16Group 22NF Battery
22R9 x 6 7/8 x 8 5/16Group 22R Battery
Group 24 Batteries10 1/4 x 6 13/16 x 8 7/8Group 24 Battery
24F10 3/4 x 6 13/16 x 9Group 24F Battery
24H10 1/4 x 6 13/16 x 9 3/8Group 24H Battery
24T10 1/4 x 6 13/16 x 9 3/4Group 24T Battery
259 1/16 x 6 7/8 x 8 7/8Group 25 Battery
268 3/16 x 6 13/16 x 7 3/4Group 26 Battery
26R8 3/16 x 6 13/16 x 7 3/4Group 26R Battery
Group 27 Battery12 1/16 x 6 13/16 x 8 7/8Group 27 Battery
27F12 1/2 x 6 13/16 x 8 15/16Group 27F Battery
27H11 3/4 x 6 13/16 x 9 1/4Group 27H Battery
29NF13 x 5 1/2 x 8 15/16Group 29NF Battery
3313 5/16 x 6 13/16 x 9 3/8Group 33 Battery
Group 34 Battery10 1/4 x 6 13/16 x 7 7/8Group 34 Battery
Group 34R Battery10 1/4 x 6 13/16 x 7 7/8Group 34R Battery
Group 35 Battery9 1/16 x 6 7/8 x 8 7/8Group 35 Battery
36R10 3/8 x 7 1/4 x 8 1/8Group 36R Battery
40R10 15/16 x 6 7/8 x 6 7/8Group 40R Battery
4111 3/16 x 6 7/8 x 6 7/8Group 41 Battery
429 5/16 x 6 13/16 x 6 13/16Group 42 Battery
Group 47 Batteries9 11/16 x 6 7/8 x 7 1/2Group 47 Battery
Group 48 Batteries12 1/16 x 6 7/8 x 7 9/16Group 48 Battery
Group 49 Batteries15 x 6 7/8 x 7 3/16Group 49 Battery
5013 1/2 x 5 x 10Group 50 Battery
Group 51 Batteries9 3/8 x5 1/16 x 8 13/16Group 51 Battery
Group 51R Batteries9 3/8 x 5 1/16 x 8 13/16Group 51R Battery
58R10 1/16 x 7 3/16 x 6 15/16Group 58R Battery
5910 1/16 x 7 5/8 x 7 3/4Group 59 Battery
6013 1/16 x 6 5/16 x 8 7/8Group 60 Battery
617 9/16 x 6 3/8 x 8 7/8Group 61 Battery
628 7/8 x 6 3/8 x 8 7/8Group 62 Battery
6310 3/16 x 6 3/8 x 8 7/8Group 63 Battery
6411 11/16 x 6 3/8 x 8 7/8Group 64 Battery
Group 65 Batteries12 1/16 x 7 1/2 x 7 9/16Group 65 Battery
708 3/16 x 7 1/16 x 7 11/16Group 70 Battery
718 3/16 x 7 1/16 x 8 1/2Group 71 Battery
729 1/16 x 7 1/16 x 8 1/4Group 72 Battery
739 1/16 x 7 1/16 x 8 1/2Group 73 Battery
7410 1/4 x 7 1/4 x 8 3/4Group 74 Battery
Group 75 Batteries9 1/16 x 7 1/16 x 7 11/16Group 75 Battery
7613 1/8 x 7 1/16 x 8 1/2Group 76 Battery
Group 78 Batteries10 1/4 x 7 1/16 x 7 11/16Group 78 Battery
859 1/16 x 6 13/16 x 8Group 85 Battery
869 1/16 x 6 13/16 x 8Group 86 Battery
909 11/16 x 6 7/8 x 6 7/8Group 90 Battery
9111 x 6 7/8 x 6 7/8Group 91 Battery
9212 1/2 x 6 7/8 x 6 7/8Group 92 Battery
9315 x 6 7/8 x6 7/8Group 93 Battery
Group 94R Batteries12 3/8 x 6 7/8 x 7 1/2Group 94R Battery
95R15 9/16 x 6 7/8 x 7 1/2Group 95R Battery
96R9 9/16 x 6 13/16 x 6 7/8Group 96R Battery
97R9 15/16 x 6 7/8 x 7 1/2Group 97R Battery
98R11 3/16 x 6 7/8 x 7 1/2Group 98R Battery
998 1/8 x 6 7/8 x 6 7/8Group 99 Battery
99R8 1/4 x 6 7/8 x 6 7/8Group 99R Battery
10010 1/4 x 7 1/16 x 7 3/8Group 100 Battery
10110 1/4 x 7 1/16 x 6 11/16Group 101 Battery
121R8 1/4 x 7 x 8 1/2Group 121R Battery
12410 7/16 x 6 7/8 x 8 7/16Group 124 Battery
124R10 3/8 x 7 x 8 5/16Group 124R Battery
151R7 3/8 x 4 15/16 x 8 7/8Group 151R Battery
Passenger Car and Light Commercial 6 V Batteries (3 Cells)
BCI Group SizeDimensions  (inches)Amazon Search Link
19 1/8 x 7 1/8 x 9 3/8Group 1 Battery
210 3/8 x 7 1/8 x 9 3/8Group 2 Battery
2E19 7/16 x 4 1/8 x 9 1/8Group 2E Battery
2N10 x 5 9/16 x 8 15/16Group 2N Battery
17HF7 3/8 x 6 7/8 x 9Group 17HF Battery
19L8 1/2 x 7 x 7 1/2Group 19L Battery
Heavy Duty Commercial and Special Tractor 12 V Batteries (6 Cells)
BCI Group SizeDimensions  (inches)Amazon Search Link
3EE19 5/16 x 4 3/8 x 8 7/8Group 3EE Battery
3ET19 5/16 x 4 3/8 x 9 13/16Group 3ET Battery
4D20 3/4 x 8 3/4 x 9 7/8Group 4D Battery
4DLT20 x 8 3/16 x 7 15/16Group 4DLT Battery
6D20 3/4 x 10 x 10 1/4Group 6D Battery
Group 8D Batteries20 3/4 x 11 1/8 x 9 7/8Group 8D Battery
12T7 1/16 x 6 15/16 x 7 15/16Group 12T Battery
2810 5/16 x 6 13/16 x 9 7/16Group 28 Battery
29H13 1/8 x 6 3/4 x 9 1/8Group 29H Battery
30H13 1/2 x 6 13/16 x 9 1/4Group 30H Battery
Group 31 Batteries13 x 6 13/16 x 9 7/16Group 31 Battery
Heavy Duty Commercial and Special Tractor 6 V Batteries (3 Cells)
BCI Group SizeDimensions  (inches)Amazon Search Link
3EH19 5/16 x 4 3/8 x 9 13/16Group 3EH Battery
413 1/8 x 7 1/8 x 9 3/8Group 4 Battery
4EH19 5/16 x 5 x 9 13/16Group 4EH Battery
5D13 3/4 x 7 1/8 x 9 3/8Group 5D Battery
7D16 1/4 x 7 1/8 x 9 3/8Group 7D Battery
Electric Vehicle 6 V Batteries (3 Cells)
BCI Group SizeDimensions  (inches)Amazon Search Link
Group GC2 Batteries10 3/8 x 7 3/16 x 10 5/8Group GC2 Battery
Group GC2H Batteries10 3/8 x 7 3/16 x 11 5/8Group GC2H Battery
Electric Vehicle 8 V Batteries (4 Cells)
BCI Group SizeDimensions  (inches)Amazon Search Link
Group GC8 Batteries10 3/8 x 7 3/16 x 10 7/8Group GC8 Battery
Group GC8H Batteries10 3/8 x 7 3/16 x 11 5/8Group GC8H Battery
Electric Vehicle 12 V Batteries (6 Cells)
BCI Group SizeDimensions  (inches)Amazon Search Link
Group GC12 Batteries12 7/8 x 7 3/16 x 10 7/8Group GC12 Battery
General Purpose 12 V Batteries (6 Cells)
BCI Group SizeDimensions  (inches)Amazon Search Link
Group U1 Batteries7 3/4 x 5 3/16 x 7 5/16Group U1 Battery
Group U1R Batteries7 3/4 x 5 3/16 x 7 5/16Group U1R Battery
U26 5/16 x 5 3/16 x 7 1/8Group U2 Battery

Note- Amazon affiliate search links in the chart open in the new windows. Feel free to visit to check the price and updates and offers. 

Lots of BCI battery groups dive by only a fraction of an inch.  Also, they can be used interchangeably, if and only if the new battery fits with the battery box and works equally and better than the previous battery. 

BCI, DIN, and EN Battery Groups Cross Reference Chart

The most popular BCI, DIN, and EN standards battery groups and their dimensions are described in the following chart.

Maximum BCI Battery Dimensions(L x W x H, inch/mm)BCI GroupMaximum DIN/EN Battery Dimensions(L x W x H mm)DIN CodesEN Codes
10 15/16 x 6 7/8 x 6 7/8277 x 175 x 17540R278 x 175 x 175T6, LB366LB
11 3/16 x 6 7/8 x 6 7/8293 x 175 x 17541293 x 175 x 175T6554LB
9 5/16 x 6 13/16 x 6 13/16243 x 173 x 17342242 x 175 x 175T5, LB245LB
9 11/16 x 6 7/8 x 7 1/2246 x 175 x 19047242 x 175 x 190H5, L255L2
12 1/16 x 6 7/8 x 7 9/16306 x 175 x 19248278 x 175 x 190H6, L366L3
15 x 6 7/8 x 7 3/16381 x 175 x 19249354 x 175 x 190H8, L588L5
9 11/16 x 6 7/8 x 6 7/8246 x 175 x 17590242 x 175 x 175T5, LB245LB
11 x 6 7/8 x 6 7/8280 x 175 x 17591278 x 175 x 175T6, LB366LB
12 1/2 x 6 7/8 x 6 7/8317 x 175 x 17592315 x 175 x 175T7, LB477LB
15 x 6 7/8 x 6 7/8354 x 175 x 17593354 x 175 x 175T8, LB588LB
12 3/8 x 6 7/8 x 7 1/2315 x 175 x 19094R315 x 175 x 190H7, L477L4
15 9/16 x 6 7/8 x 7 1/2394 x 175 x 19095R394 x 175 x 190H9, L6
9 15/16 x 6 7/8 x 7 1/2252 x 175 x 19097R252 x 175 x 190H5, L255L2
11 3/16 x 6 7/8 x 7 1/2283 x 175 x 19098R283 x 175 x 190H6, L366L3
8 1/8 x 6 7/8 x 6 7/8207 x 175 x 17599207 x 175 x 175T4, LB136LB
8 1/4 x 6 7/8 x 6 7/8210 x 175 x 17599R210 x 175 x 175T4, LB136LB
175 x 175 x 190H3, L032L0
297 x 175 x 190H4, L145L1

Note: This table chart  only provides related information of the battery dimensions and not their orientation or work policy and purpose. 

This article guides you about a  different battery size chart. Don’t be confused because most of the battery dimensions are similar. But performance is different. Some are good for heavy duty, some for light work. Pick the best one according to the need and instructions of the power applications. 

When you pick batteries check the size, performance, categories, work process and other necessary things. 

Here are small descriptions of some common BCI batteries. That provides some related information about this area. 

Group 24 Batteries Related Information

This group of batteries is used for general-purpose. Most of them are used for large UPS, medical and security systems, vehicles, wheelchairs, industrial applications, etc.  These are easy to use and come at affordable prices. 

They are hardly used for starting/cranking batteries; rather 24 group batteries are used in deep cycle standby/float applications.

Group 27 Batteries Capacity

The group 27 batteries are powerful and large batteries. It features a 20h capacity in the 66-110 Ah range and provides 600-1000 CCA. The RC rate is 140-220 in minutes. Product weight between 14 to 33 kg. Most of the time this battery is used for heavy-duty work. 

Group GC12 Batteries Informations 

BCI Group GC12 batteries are deep cycle batteries. This battery is also known as the 12V golf cart battery. It’s a heavy-duty battery that is suitable for automotive and off-the-grid batteries. It is used for , and light industrial works for durability and performance. 

This is popular for work with the trolling motor batteries  and medical and security system, RV house batteries and so on. 

Group 75 Batteries

These batteries are suitable for the automotive and light industry. Comes with stand prices. Very popular for the performance because it is good for starting features. BCI group 75 is used for different work. They have the ability to work with different vehicles including cars and trucks. You can also use them for powering different items like light, pums  and many more. 

Group GC2 and Group GC2H Batteries Ability 

You can pick these batteries for heavy duty. The BCI group GC2 and Group GC2H batteries are both deep cycle and heavy-duty batteries. Most of the time they apply for golf carts and other automotive items. These cattery batteries also work as deep cycle batteries in marine and off-the-grid applications.

BCI Group 4D and 8D Batteries Features and Specifications

Both batteries are large and heavy lead-acid. They are heavy-duty batteries because both have the ability to store large amounts of energy. They are strong and durable for a long time. 

BCI group 4D and 8D are popular to work with in automotive, marine applications and industrial purposes. 

Final Directions

Hope that you get information about the group battery size. This will help you to choose the right battery for your work. Before buying any battery first follow the instructions of the manufacturer if you want to replace the battery for your old devices. Or if you need to pick the best one for your work or projects research properly so that you can pick the best one for you or your clients. 

Relevant Resources:

Hi! I'm Liam Oscar, and this is where I spend most of my time attempting to publish valuable articles for my readers! This site contains all of the information that I believe we all need to know about batteries, chargers, and other accessories.

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