What Is Normal Car Battery Voltage. Therefore a voltage appears that is higher than usual. The key to long life for any battery is to make sure battery voltage doesnt drop below 124 volts.
If the voltage is not 125 the battery is dying. The normal range of a car capacity varies from 50 to 100Ah Amps Hours and hence its battery can supply around 50 100 amperes for 20 hours before the voltage falls flat below 105 108 volts in general. A battery should turn over an engine with a voltage of 109 volts if you have amps.
When that happens sulfation begins.
Its power drops from 100 to 25. How old is the battery. When that happens sulfation begins. When the engine of your vehicle is running the voltage of your car battery should be between 135 and 147 voltsDuring that time the alternator of your vehicle is busy charging the battery.
