What Voltage Should A Car Battery Read. The basic terminologies of battery technology are explained below one by one for better understanding. Ad Need a New Battery.
Typically your car battery should read close to 15 volts if its at optimum functionality but still depending on the condition. To get a true voltage reading of the cars battery it is important to measure the voltage after the car has been sat for a period with the engine off preferably overnight this provides you with the car battery open circuit voltage or also know as the resting voltage. Whenever there is no load connected to a battery cell the voltage that appears across the positive and negative terminal of the cell is known as the open-circuit voltage.
The higher temperature also tend to reduce the internal resistance of the battery.
Does this mean your car wont start. Does this mean your car wont start. The higher temperature also tend to reduce the internal resistance of the battery. A good car battery should read 124-129 volts when the car is off.
