you know how there’s aa’s, aaa’s, c’s, d’s? well, there are also single a’s.

this is a picture of a group of a’s taken from a laptop with a “c” and a “aa” and  a “aaa” for comparison. well, actually, those are technically 5/4 a’s because they are the length of an “a ” + 1/4 of it’s overall length, thereby making a straight “a” battery 4/5 the length of what is pictured.

there is no “b” sized battery and what would be considered a “b” size-wise is called a sub-c.