Shipping Announcement

  Orders placed from

12/22/23 through 12/26/23

will start shipping on 12/27/23.


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all of us at BatteryGuys! 


Find a Replacement Battery

What is a BCI Group Number?

Commercially manufactured batteries adhear to a size standard called the BCI Group Number set forth by the Battery Council International. The BCI number refers to the physical dimensions of the battery and not the Amp Hours (AH) capacity. Although, there is a correlation between the battery case size an AH rating. Generally speaking the larger the battery the more the capacity.

How do I find a replacement battery?

At, we've made it simple for you to find a replacement battery for your application. Simply find your BCI group number which is stamped or printed on your battery and click on the associated link below to see a list of different batteries that will fit your vehicle. Then locate the battery with the proper amperage needs for your application (usually specified by your vehicle manufacturer).  

Should you have any questions, please give us a call and one of our experts will be more than happy to walk you through your options. 


BCI Group Number Lookup
Group 24 Group 25 Group 27 Group 31
Group 34 Group 35 Group 48
Group 51
Group 65
Group 75
Group 78
Group 94
Group 24F
Group 27F
Group 34/78
Group 34M
Group 34R
Group 4D
Group 51R
Group 75/25
Group 75/86
Group 8D
Group GC2
Group GC2 Tall
Group Specialty
Group U1 Group Tall U1 Group 22NF
Group 901
Group 902 Group 903 Group GC8
Group GC12
Group 921