Will a dead car battery read 12 volts?
Will a dead car battery read 12 volts? If your battery is reading 0 volts, chances are the battery experienced a short circuit. If the battery cannot reach higher than 10.5 volts when being charged, then the battery has a dead cell. If the battery is fully charged (according to the battery charger) but the voltage is 12.5 or less, the battery is sulfated. How many volts will a dead battery have? 11.9 volts A battery is only charged by one quarter at just 12 volts. Once it drops to 11.9 volts, your battery is considered dead. Keep in mind...