Tech Articles

Mailbag: What is a Battery BCI Number?

(Image/Andy Mohr Speedway Chevrolet)

A battery BCI number indicates the physical size dimensions of the battery rather than its Amp Hours (AH) rating.

The BCI group numbers are used to categorize automotive batteries by the size of its case in addition to both the type of terminals each battery has, and their location on the battery.

These numbers were developed by the Battery Council International, a non-profit trade organization dedicated to promote the interests of the lead battery manufacturing and recycling industries.

Below, you’ll find a BCI group number chart that lists each battery group number, along with its application, physical dimensions, as well as the battery terminal style and location for each.

BCIApplicationL x W x H (in.)Terminals
2112V Auto 8.2 x 6.8 x 8.8 Top - SAE Auto, L/H-POS
21R12V Auto 8.2 x 6.8 x 8.8 Top - SAE Auto, R/H-POS
22F12V Auto 9.5 x 6.9 x 8.3 Top - SAE Auto, R/H-POS
22HF12V Auto 9.4 x 5.5 x 8.9 Top - SAE Auto, R/H-POS
22NF12V Auto 9.4 x 5.5 x 8.9 Top - SAE Auto, R/H-POS
2412V Auto 10.3 x 6.8 x 8.9 Top - SAE Auto, L/H-POS
24F12V Auto 10.3 x 6.8 x 8.9 Top - SAE Auto, R/H-POS
2512V Auto 9.1 x 6.9 x 8.9 Top - SAE Auto, L/H-POS
2612V Auto 8.2 x 6.8 x 7.8 Top - SAE Auto, L/H-POS
26R12V Auto 8.2 x 6.8 x 7.8 Top - SAE Auto, R/H-POS
26 - 7012V Auto 8.2 x 6.8 x 7.8 Top & Side, C-Line
2712V Auto 12.1 x 6.8 x 8.9 Top - SAE Auto, L/H-POS
27F12V Auto 12.1 x 6.8 x 8.9 Top - SAE Auto, R/H-POS
29NF12V Auto 13 x 5.5 x 8.9 Top - SAE Auto, R/H-POS
3312V Auto 13.3 x 6.8 x 9.4 Top - SAE Auto, R/H-POS
3412V Auto 10.3 x 6.8 x 7.9 Top - SAE Auto, L/H-POS
34R12V Auto 10.3 x 6.8 x 7.9 Top - SAE Auto, R/H-POS
34 - 7812V Auto 10.3 x 6.8 x 7.9 Top & Side, C-Line
3512V Auto 9.1 x 6.9 x 8.9 Top - SAE Auto, R/H-POS
36R12V Auto 10.4 x 7.3 x 8.1 Top - SAE Auto, R/H-POS
40R12V Auto 10.9 x 6.9 x 6.9 Top - SAE Auto, R/H-POS
4112V Auto 11.6 x 6.9 x 6.9 Top - SAE Auto, R/H-POS
4212V Auto 9.6 x 6.8 x 6.8 Top - SAE Auto, R/H-POS
4312V Auto 13.1 x 6.9 x 8 Top - SAE Auto, R/H-POS
4512V Auto 9.5 x 5.5 x 9 Top - SAE Auto, L/H-POS
4612V Auto 10.8 x 6.8 x 9 Top - SAE Auto, L/H-POS
4712V Auto 9.7 x 6.9 x 7.5 Top - SAE Auto, R/H-POS
4812V Auto 12.1 x 6.9 x 7.6 Top - SAE Auto, R/H-POS
4912V Auto 13.9 x 6.9 x 7.6 Top - SAE Auto, R/H-POS
5012V Auto 13.5 x 5 x 10 Top - SAE Auto, L/H-POS
5112V Auto 9.4 x 5.1 x 8.8 Top - SAE Auto, L/H-POS
51R12V Auto 9.4 x 5.1 x 8.8 Top - SAE Auto, R/H-POS
5212V Auto 7.3 x 5.8 x 8.3 Top - SAE Auto, L/H-POS
5312V Auto 13 x 4.7 x 8.3 Top - SAE Auto, L/H-POS
5412V Auto 7.3 x 6.1 x 8.4 Top - SAE Auto, R/H-POS
5512V Auto 8.6 x 6.1 x 8.4 Top - SAE Auto, R/H-POS
5612V Auto 10 x 6.1 x 8.4 Top - SAE Auto, R/H-POS
5712V Auto 8.1 x 7.2 x 6.9 Top - SAE Auto, L/H-POS
5812V Auto 10.1 x 7.2 x 6.9 Top - SAE Auto, L/H-POS
58R12V Auto 10.1 x 7.2 x 6.9 Top - SAE Auto, R/H-POS
5912V Auto 10.1 x 7.6 x 7.8 Top - SAE Auto, L/H-POS
6012V Auto 13.1 x 6.3 x 8.9 Top - SAE Auto, R/H-POS
6112V Auto 7.6 x 6.4 x 8.9 Top - SAE Auto, R/H-POS
6212V Auto 8.9 x 6.4 x 8.9 Top - SAE Auto, R/H-POS
6312V Auto 10.2 x 6.4 x 8.9 Top - SAE Auto, R/H-POS
6412V Auto 11.7 x 6.4 x 8.9 Top - SAE Auto, R/H-POS
6512V Auto 12.1 x 7.5 x 7.6 Top - SAE Auto, L/H-POS
6612V Auto 12.1 x 7.5 x 7.6 Top - SAE Auto, L/H-POS
7012V Auto 8.2 x 7.1 x 7.3 Side, L/H-POS
7512V Auto 9.1 x 7.1 x 7.3 Side, L/H-POS
7812V Auto 10.3 x 7.1 x 7.3 Side, L/H-POS
7912V Auto 12.1 x 7.1 x 7.4 Side, L/H-POS
8512V Auto 9.1 x 6.8 x 8 Top - SAE Auto, R/H-POS
8612V Auto 9.1 x 6.8 x 8 Top - SAE Auto, L/H-POS
9012V Auto 9.5 x 6.9 x 6.9 Top - SAE Auto, R/H-POS
9112V Auto 11 x 6.9 x 6.9 Top - SAE Auto, R/H-POS
9212V Auto 12.5 x 6.9 x 6.9 Top - SAE Auto, R/H-POS
9312V Auto 13.9 x 6.9 x 6.9 Top - SAE Auto, R/H-POS
94R12V Auto 12.4 x 6.9 x 7.5 Top - SAE Auto, R/H-POS
95R12V Auto 15.6 x 6.9 x 7.5 Top - SAE Auto, R/H-POS
96R12V Auto 9.6 x 6.2 x 6.9 Top - SAE Auto, R/H-POS
97R12V Auto 9.9 x 6.9 x 7.5 Top - SAE Auto, R/H-POS
98R12V Auto 11.2 x 6.9 x 7.5 Top - SAE Auto, R/H-POS
9912V Auto 8.2 x 6.9 x 6.9 Top - SAE Auto, L/H-POS
10012V Auto 10.3 x 7 x 7.3 Side, L/H-POS
10112V Auto 10.3 x 7 x 6.7 Side, L/H-POS
121R12V Auto 8.3 x 7 x 8.5 Top - SAE Auto, R/H-POS
12412V Auto 10.4 x 6.9 x 8.4 Top - SAE Auto, L/H-POS
124R12V Auto 10.8 x 7 x 8.6 Top - SAE Auto, R/H-POS
140R12V Auto 8.1 x 6.9 x 7.5 Top - SAE Auto, R/H-POS
151R12V Auto 7.4 x 4.9 x 8.9 Top - SAE Auto, R/H-POS
19L6V Commercial8.5 x 7 x 7.5 Top - SAE Auto, Opposite Corners
3EECommercial19.3 x 4.4 x 8.9 Top - SAE Auto, L/H-POS
4DLTCommercial20 x 8.2 x 7.2 Top - SAE Auto, L/H-POS
4D12V Commercial20.75 x 8.75 x 9.8 Top - SAE Auto, R/H-POS
8D12V Commercial20.75 x 11.12 x 9.81 Top - SAE Auto, R/H-POS
30H12V Commercial13.5 x 6.81 x 9.25 Top - SAE Auto, L/H-POS
31ACommercial13 x 6.81 x 9.43 Top - SAE Auto, L/H-POS, C-Line
31TCommercial13 x 6.81 x 9.43 Threaded Stud, L/H-POS, C-Line
U1Utility 7.75 x 5.18 x 7.31 Nut & Bolt, L/H-POS
U1RUtility 7.75 x 5.18 x 7.31 Nut & Bolt, R/H-POS
GC26V Golf Cart/Utility 10.37 x 7.18 x 10.87 Threaded Stud, Opposite Corners
GC88V Golf Cart/Utility 10.37 x 7.18 x 10.87 Threaded Stud, L/H-POS
GC1212V Golf Cart/Utility 12.87 x 7.18 x 10.87 Threaded Stud, L/H-POS

This is another in a series of weekly Q&A Mailbag sessions with Summit Racings tech department, in which there are hundreds more. Click here to see them all.

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One Comment

  1. Daniel Wilson says:

    While the topic of BCI specifications might not have the allure of something more exotic like forced induction systems, it’s still essential information for planning a well thought out automotive electrical system. Little details like knowing if the positive post is on the left or right side can make a big difference when ordering or installing a new battery. Ask me how I know…or didn’t know. Thanks to the OAC Staff, now I know for sure.

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