I'm starting to convert my 6V over to 12V, I was wondering (since the 6V cars had very small battery boxes), what are the smallest 12V batteries (dimensionally) people have used in their cars?

I was in a car parts store the other day, and did some quick measurements on some batteries they had on display (high power-expensive ones). The smallest I saw was 9 in long by 6-3/4 in wide by 6-3/4 in high (not including the terminal posts). I didn't look at the cranking amps or anything else, just the dimensions.


Paul