What Is A Good Battery Voltage For A Car. How many volts should a car battery have. Have your car battery tested regularly.

Modern cars are very demanding from an electrical perspective even when theyre not being used. It would be an indicator of a battery condition. The battery needs a certain voltage to charge and maintain charge generally over middle 13 volts in a lead-acid 12 volt system.
Pro Tip If you see a negative number it simply means youve attached the multimeter leads backwards.
The ideal car battery voltage with the engine running is between 137 and 147V. Lower parameters mean that the machine drains some power out. The actual open circuit voltage of a 100 charged battery is between 1270v and 1280v because each cell is approximately 213v. It would be an indicator of a battery condition.

