How To Check Car Battery Is Working Or Not. You can check the voltage of your car battery. Try turning on your windshield wipers lights or automatic windows.

Check your battery voltage with the car. Test the battery voltage. Big O Tires Offers Safe Quality Auto Repair At The Best Price From A Team You Can Trust.
If the battery holds a charge when its not connected to the car its not faulty.
Turn the vehicles key to the run position and check the multimeter. Turn off the ignition and any accessories like lights or the radio in the vehicle. Check commonly used connections. The specific gravity is the ratio of water to the electrolyte fluid.
