411A,
Yes indeed that would be hopeless. We use 4 light truck batteries ie. N70s 2 pairs in series plus 4volt section on a forklift battery in series. 12V + 12V +4V= 28VOLTS WALA!Works very well, just have to keep servicing it meaning check electrolyte level and SG of the cells regualary especially when in tropic environs.
Also another trap for new players is get a good charger that cuts off when fully charged otherwise you may boil your cart dry.
Sheep