How to Test Your Car’s Battery

If your car’s battery doesn’t seem to be holding a charge, you can test it using a voltmeter. You may choose an analog or digital version, but either one will assist you with the same information. Begin by making sure that your ignition and lights are both turned off. From there, first attach the red, or positive cable to the positive battery terminal. Repeat this step by attaching the negative, or black, cable to the battery’s negative terminal.

Your battery should indicate 12.4 volts or above. That’s the minimum that’s required to hold a charge. If it’s registering 12 volts, or below, it’s not supplying enough power to start the engine. You can clean the battery’s terminals and cable ends. Use an appropriate brush and cleaning solution. Disconnect the negative connection first followed by the positive cable. After cleaning, retest the battery with the voltmeter.

If the car battery still does not hold a charge, it may be time for a replacement. We’re here at Paul Miller Audi in Parsippany, NJ to assist you with your questions. Don’t hesitate to contact us with concerns about your battery or any other aspect of your vehicle’s maintenance.

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