How Many Volts Should A Car Battery Have When Running. A car battery should read a minimum of 126 volts and when your engine is in operation the battery should record a voltage value within the range of 137 147 volts. If youre readings are significantly higher or lower than these then it would indicate a fault with the battery andor the alternator.
9 or 278 amps. Although it goes a little higher up to 15 volts due to the power being received from the alternator. How long will a 12 volt battery run a fan.
The volts are going to depend on the battery manufactor and the.
Each battery is complete with 6 separate cells that each contains 21 volts for a total of 126 volts. 146 would be high normal 135v would be acceptable battery charging voltage. If you can not start your car with the volts at 121 then you have an amp problem possible sulfated plates. Each battery is complete with 6 separate cells that each contains 21 volts for a total of 126 volts.
