How To Test If Car Battery Is Good. It is important to check the battery voltage occasionally. Turn off the ignition and any accessories like lights or the radio in the vehicle.
An empty battery can cause you to be stranded in dangerous places. Most car batteries which are in good condition will last at least two weeks without needing you to start the car and drive to recharge it according to the AA. If your multimeter is not autoranging set it to 20V DC.
This means that your car battery is unable to give the sufficient amps to start your starter motor.
If everything is fine use a voltmeter to check the battery voltage. You can start by checking the battery for cracks or bulging sides. How to check car battery with multimeter. How to Test a Car Battery Without a Multimeter Testing your car battery with a multimeter is the easiest and most effective way to get the job done.
