How To Test If A Car Battery Is Bad. Check Charging System Output. It could be a bad alternator a parasitic draw or a bad battery.
Then compare it to the voltage figures below. We Make Shopping Quick and Easy. 1226v vs 1231v With the car.
Place the red lead on the positive battery.
What Do We Do. It should start with no problem if the battery is healthy. Turn the vehicles key to the run position and check the multimeter. Testing the Alternator and the Battery for an Answer.
