What Is The Normal Battery Voltage For A Car. A fully charged car battery voltage should be 126v or above this is with the engine off. When stopped the battery voltage must be between 123 and 135 volts.
I was simply a. The cell voltage of a battery depends on its chemistry. Voltages and Specific Gravity are listed for a 6-volt or 12-volt battery and battery banks of 24 and 48 volts.
I put together the following battery state of charge chart which indicates the state-of-charge percent as it relates to battery voltage or specific gravity.
A lead acid car battery provides a nominal 2 volts. I have seen a 24 volt battery. When stopped the battery voltage must be between 123 and 135 volts. However if the cold weather charging mode is chosen then it increases the charging voltage to 147 V.
