think of it this way, the main purpose of the battery, a car battery is designed to start the motor (cca) then the alt. pretty much takes over from there and powers the acc., where as the 6v battery is designed to power a olf cart thru 18 holes of golf re-charge and do it again and again, i think they actually rate them at 3-4 games per day, so the way you draw power off if it is more like the 6v fashion than the 12v.