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 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 Size | Dimensions |
| Group 51 and 51R Batteries | 9.374 x 5.0625 x 8.8125 inches |
| Group 24 Batteries | 10.25 x 6.8125 x 8.875 inches |
| Group 35 Batteries | 9.0625 x 6.875 x 8.875 inches |
| Group 27 Batteries | 12.0625 x 6.8125 x 8.875 inches |
| Group 31 Batteries | 13 x 6.8125 x 9.4375 inches |
| Group 34 Batteries | 10.25 x 6.8125 x 7.875 inches |
| Group 65 Batteries | 12.0625 x 7.5 x 7.5625 inches |
| Group 78 Batteries | 10.25 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 Size | Dimensions (inches) | Battery Group |
| 21 | 8 3/16 x 6 13/16 x 8 3/4 | Group 21 Battery |
| 21R | 8 3/16 x 6 13/16 x 8 3/4 | Group 21R Battery |
| 22HF | 9 1/2 x 6 7/8 x 9 | Group 22HF Battery |
| 22NF | 9 7/16 x 5 1/2 x 8 15/16 | Group 22NF Battery |
| 22R | 9 x 6 7/8 x 8 5/16 | Group 22R Battery |
| Group 24 Batteries | 10 1/4 x 6 13/16 x 8 7/8 | Group 24 Battery |
| 24F | 10 3/4 x 6 13/16 x 9 | Group 24F Battery |
| 24H | 10 1/4 x 6 13/16 x 9 3/8 | Group 24H Battery |
| 24T | 10 1/4 x 6 13/16 x 9 3/4 | Group 24T Battery |
| 25 | 9 1/16 x 6 7/8 x 8 7/8 | Group 25 Battery |
| 26 | 8 3/16 x 6 13/16 x 7 3/4 | Group 26 Battery |
| 26R | 8 3/16 x 6 13/16 x 7 3/4 | Group 26R Battery |
| Group 27 Battery | 12 1/16 x 6 13/16 x 8 7/8 | Group 27 Battery |
| 27F | 12 1/2 x 6 13/16 x 8 15/16 | Group 27F Battery |
| 27H | 11 3/4 x 6 13/16 x 9 1/4 | Group 27H Battery |
| 29NF | 13 x 5 1/2 x 8 15/16 | Group 29NF Battery |
| 33 | 13 5/16 x 6 13/16 x 9 3/8 | Group 33 Battery |
| Group 34 Battery | 10 1/4 x 6 13/16 x 7 7/8 | Group 34 Battery |
| Group 34R Battery | 10 1/4 x 6 13/16 x 7 7/8 | Group 34R Battery |
| Group 35 Battery | 9 1/16 x 6 7/8 x 8 7/8 | Group 35 Battery |
| 36R | 10 3/8 x 7 1/4 x 8 1/8 | Group 36R Battery |
| 40R | 10 15/16 x 6 7/8 x 6 7/8 | Group 40R Battery |
| 41 | 11 3/16 x 6 7/8 x 6 7/8 | Group 41 Battery |
| 42 | 9 5/16 x 6 13/16 x 6 13/16 | Group 42 Battery |
| Group 47 Batteries | 9 11/16 x 6 7/8 x 7 1/2 | Group 47 Battery |
| Group 48 Batteries | 12 1/16 x 6 7/8 x 7 9/16 | Group 48 Battery |
| Group 49 Batteries | 15 x 6 7/8 x 7 3/16 | Group 49 Battery |
| 50 | 13 1/2 x 5 x 10 | Group 50 Battery |
| Group 51 Batteries | 9 3/8 x5 1/16 x 8 13/16 | Group 51 Battery |
| Group 51R Batteries | 9 3/8 x 5 1/16 x 8 13/16 | Group 51R Battery |
| 58R | 10 1/16 x 7 3/16 x 6 15/16 | Group 58R Battery |
| 59 | 10 1/16 x 7 5/8 x 7 3/4 | Group 59 Battery |
| 60 | 13 1/16 x 6 5/16 x 8 7/8 | Group 60 Battery |
| 61 | 7 9/16 x 6 3/8 x 8 7/8 | Group 61 Battery |
| 62 | 8 7/8 x 6 3/8 x 8 7/8 | Group 62 Battery |
| 63 | 10 3/16 x 6 3/8 x 8 7/8 | Group 63 Battery |
| 64 | 11 11/16 x 6 3/8 x 8 7/8 | Group 64 Battery |
| Group 65 Batteries | 12 1/16 x 7 1/2 x 7 9/16 | Group 65 Battery |
| 70 | 8 3/16 x 7 1/16 x 7 11/16 | Group 70 Battery |
| 71 | 8 3/16 x 7 1/16 x 8 1/2 | Group 71 Battery |
| 72 | 9 1/16 x 7 1/16 x 8 1/4 | Group 72 Battery |
| 73 | 9 1/16 x 7 1/16 x 8 1/2 | Group 73 Battery |
| 74 | 10 1/4 x 7 1/4 x 8 3/4 | Group 74 Battery |
| Group 75 Batteries | 9 1/16 x 7 1/16 x 7 11/16 | Group 75 Battery |
| 76 | 13 1/8 x 7 1/16 x 8 1/2 | Group 76 Battery |
| Group 78 Batteries | 10 1/4 x 7 1/16 x 7 11/16 | Group 78 Battery |
| 85 | 9 1/16 x 6 13/16 x 8 | Group 85 Battery |
| 86 | 9 1/16 x 6 13/16 x 8 | Group 86 Battery |
| 90 | 9 11/16 x 6 7/8 x 6 7/8 | Group 90 Battery |
| 91 | 11 x 6 7/8 x 6 7/8 | Group 91 Battery |
| 92 | 12 1/2 x 6 7/8 x 6 7/8 | Group 92 Battery |
| 93 | 15 x 6 7/8 x6 7/8 | Group 93 Battery |
| Group 94R Batteries | 12 3/8 x 6 7/8 x 7 1/2 | Group 94R Battery |
| 95R | 15 9/16 x 6 7/8 x 7 1/2 | Group 95R Battery |
| 96R | 9 9/16 x 6 13/16 x 6 7/8 | Group 96R Battery |
| 97R | 9 15/16 x 6 7/8 x 7 1/2 | Group 97R Battery |
| 98R | 11 3/16 x 6 7/8 x 7 1/2 | Group 98R Battery |
| 99 | 8 1/8 x 6 7/8 x 6 7/8 | Group 99 Battery |
| 99R | 8 1/4 x 6 7/8 x 6 7/8 | Group 99R Battery |
| 100 | 10 1/4 x 7 1/16 x 7 3/8 | Group 100 Battery |
| 101 | 10 1/4 x 7 1/16 x 6 11/16 | Group 101 Battery |
| 121R | 8 1/4 x 7 x 8 1/2 | Group 121R Battery |
| 124 | 10 7/16 x 6 7/8 x 8 7/16 | Group 124 Battery |
| 124R | 10 3/8 x 7 x 8 5/16 | Group 124R Battery |
| 151R | 7 3/8 x 4 15/16 x 8 7/8 | Group 151R Battery |
| Passenger Car and Light Commercial 6 V Batteries (3 Cells) | ||
| BCI Group Size | Dimensions (inches) | Battery Group |
| 1 | 9 1/8 x 7 1/8 x 9 3/8 | Group 1 Battery |
| 2 | 10 3/8 x 7 1/8 x 9 3/8 | Group 2 Battery |
| 2E | 19 7/16 x 4 1/8 x 9 1/8 | Group 2E Battery |
| 2N | 10 x 5 9/16 x 8 15/16 | Group 2N Battery |
| 17HF | 7 3/8 x 6 7/8 x 9 | Group 17HF Battery |
| 19L | 8 1/2 x 7 x 7 1/2 | Group 19L Battery |
| Heavy Duty Commercial and Special Tractor 12 V Batteries (6 Cells) | ||
| BCI Group Size | Dimensions (inches) | Battery Group |
| 3EE | 19 5/16 x 4 3/8 x 8 7/8 | Group 3EE Battery |
| 3ET | 19 5/16 x 4 3/8 x 9 13/16 | Group 3ET Battery |
| 4D | 20 3/4 x 8 3/4 x 9 7/8 | Group 4D Battery |
| 4DLT | 20 x 8 3/16 x 7 15/16 | Group 4DLT Battery |
| 6D | 20 3/4 x 10 x 10 1/4 | Group 6D Battery |
| Group 8D Batteries | 20 3/4 x 11 1/8 x 9 7/8 | Group 8D Battery |
| 12T | 7 1/16 x 6 15/16 x 7 15/16 | Group 12T Battery |
| 28 | 10 5/16 x 6 13/16 x 9 7/16 | Group 28 Battery |
| 29H | 13 1/8 x 6 3/4 x 9 1/8 | Group 29H Battery |
| 30H | 13 1/2 x 6 13/16 x 9 1/4 | Group 30H Battery |
| Group 31 Batteries | 13 x 6 13/16 x 9 7/16 | Group 31 Battery |
| Heavy Duty Commercial and Special Tractor 6 V Batteries (3 Cells) | ||
| BCI Group Size | Dimensions (inches) | Battery Group |
| 3EH | 19 5/16 x 4 3/8 x 9 13/16 | Group 3EH Battery |
| 4 | 13 1/8 x 7 1/8 x 9 3/8 | Group 4 Battery |
| 4EH | 19 5/16 x 5 x 9 13/16 | Group 4EH Battery |
| 5D | 13 3/4 x 7 1/8 x 9 3/8 | Group 5D Battery |
| 7D | 16 1/4 x 7 1/8 x 9 3/8 | Group 7D Battery |
| Electric Vehicle 6 V Batteries (3 Cells) | ||
| BCI Group Size | Dimensions (inches) | Battery Group |
| Group GC2 Batteries | 10 3/8 x 7 3/16 x 10 5/8 | Group GC2 Battery |
| Group GC2H Batteries | 10 3/8 x 7 3/16 x 11 5/8 | Group GC2H Battery |
| Electric Vehicle 8 V Batteries (4 Cells) | ||
| BCI Group Size | Dimensions (inches) | Battery Group |
| Group GC8 Batteries | 10 3/8 x 7 3/16 x 10 7/8 | Group GC8 Battery |
| Group GC8H Batteries | 10 3/8 x 7 3/16 x 11 5/8 | Group GC8H Battery |
| Electric Vehicle 12 V Batteries (6 Cells) | ||
| BCI Group Size | Dimensions (inches) | Battery Group |
| Group GC12 Batteries | 12 7/8 x 7 3/16 x 10 7/8 | Group GC12 Battery |
| General Purpose 12 V Batteries (6 Cells) | ||
| BCI Group Size | Dimensions (inches) | Battery Group |
| Group U1 Batteries | 7 3/4 x 5 3/16 x 7 5/16 | Group U1 Battery |
| Group U1R Batteries | 7 3/4 x 5 3/16 x 7 5/16 | Group U1R Battery |
| U2 | 6 5/16 x 5 3/16 x 7 1/8 | Group 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 Group | Maximum DIN/EN Battery Dimensions(L x W x H mm) | DIN Codes | EN Codes |
| 10 15/16 x 6 7/8 x 6 7/8277 x 175 x 175 | 40R | 278 x 175 x 175 | T6, LB3 | 66LB |
| 11 3/16 x 6 7/8 x 6 7/8293 x 175 x 175 | 41 | 293 x 175 x 175 | T65 | 54LB |
| 9 5/16 x 6 13/16 x 6 13/16243 x 173 x 173 | 42 | 242 x 175 x 175 | T5, LB2 | 45LB |
| 9 11/16 x 6 7/8 x 7 1/2246 x 175 x 190 | 47 | 242 x 175 x 190 | H5, L2 | 55L2 |
| 12 1/16 x 6 7/8 x 7 9/16306 x 175 x 192 | 48 | 278 x 175 x 190 | H6, L3 | 66L3 |
| 15 x 6 7/8 x 7 3/16381 x 175 x 192 | 49 | 354 x 175 x 190 | H8, L5 | 88L5 |
| 9 11/16 x 6 7/8 x 6 7/8246 x 175 x 175 | 90 | 242 x 175 x 175 | T5, LB2 | 45LB |
| 11 x 6 7/8 x 6 7/8280 x 175 x 175 | 91 | 278 x 175 x 175 | T6, LB3 | 66LB |
| 12 1/2 x 6 7/8 x 6 7/8317 x 175 x 175 | 92 | 315 x 175 x 175 | T7, LB4 | 77LB |
| 15 x 6 7/8 x 6 7/8354 x 175 x 175 | 93 | 354 x 175 x 175 | T8, LB5 | 88LB |
| 12 3/8 x 6 7/8 x 7 1/2315 x 175 x 190 | 94R | 315 x 175 x 190 | H7, L4 | 77L4 |
| 15 9/16 x 6 7/8 x 7 1/2394 x 175 x 190 | 95R | 394 x 175 x 190 | H9, L6 | – |
| 9 15/16 x 6 7/8 x 7 1/2252 x 175 x 190 | 97R | 252 x 175 x 190 | H5, L2 | 55L2 |
| 11 3/16 x 6 7/8 x 7 1/2283 x 175 x 190 | 98R | 283 x 175 x 190 | H6, L3 | 66L3 |
| 8 1/8 x 6 7/8 x 6 7/8207 x 175 x 175 | 99 | 207 x 175 x 175 | T4, LB1 | 36LB |
| 8 1/4 x 6 7/8 x 6 7/8210 x 175 x 175 | 99R | 210 x 175 x 175 | T4, LB1 | 36LB |
| – | – | 175 x 175 x 190 | H3, L0 | 32L0 |
| – | – | 297 x 175 x 190 | H4, L1 | 45L1 |
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:
- LR1130 Battery Equivalents and Replacement
- Can I Charge My Car Battery With My Home Inverter
- How Long Does a Car Battery Last With Radio on
About This Writer
Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.