Question: are there different size car batteries?
Answer: Different Sizes of Car Battery Car battery sizes are described in terms of a battery group size. ... The most common battery group sizes are 24, 24F, 25, 34, 35, 51, 51R, 52, 58, 58R, 59, and 65. Manufacturers tend to favor a particular battery group size. Many General Motors vehicles in the US have side-post batteries.