Determining how many volts your golf cart uses is as easy as counting the water fill caps on the batteries. Lifting up your golf cart’s seat reveals the battery compartment. The water fill caps are located on each battery. Each battery cell covered by a cap is 2-volts. Simply count all of the battery fill caps on your batteries, multiply this total by two, and you will have determined your golf cart’s voltage. Gas golf carts utilize one 12-volt battery.