[zeugma]

Though I sometimes wonder why there are no “B” batteries.

After reading through some of the replies, another question comes to mind... We have AAA, AA, (apparently)B, C, and D batteries. It all seems logical and orderly, but then, why do we call a 9-volt battery a 9-volt rather than some other designation? I'm sure some freeper will know.

[Mr_Moonlight]

In deference to The Cat ....

[Billthedrill]

According to this article it has to do with the War Industry Board that tried to standardize battery designations during WWI. They grandfathered older batteries and couldn't standardize the newer ones that didn't exist yet. Apparently you can still get B batteries in Europe, for now.

If you want some real fun try explaining firearms caliber terminology to the uninitiated sometime.