How Many Volts Should My Car Battery Have. The ideal car battery voltage with the engine running is between 137 and 147V. If you measure with the engine running this number increases to between 136 and 146 volts.

A battery should turn over an engine with a voltage of 109 volts if you have amps. 2 Count the number of holes on a battery. Each holecell is equal to 2 volts.
If you measure with the engine running this number increases to between 136 and 146 volts.
A reading of 1265-1277 volts means your battery has a full charge. So 118 volts will do nothing and youd immediately charge the battery and up the volts to at least 124 volts. 1 Lift up your golf cart seat to locate the battery compartment. It depends upon what type of battery you are referring to.
