How to Test Your Car’s Battery

If your car’s battery has made it through the long winter, but is beginning to show signs of slowing down, you may want to run some checks on it. There are a couple of ways to determine if it’s charging properly. Check the cells’ fluid levels and top off with distilled water as needed before determining the charge.

On a fully-charged battery, the voltmeter should indicate that it has a minimum of 12.6 volts. When you take a reading while the vehicle’s running, the volts should register between 13.7 and 14.7. You can also get an approximate idea of how well your system’s charging by starting the car and turning the headlights on. If the lights are dim, or their brightness fluctuates as you rev the engine, that’s a symptom of not receiving an adequate charge from the alternator. When the lights remain brightly lit throughout the check, then the system’s charging fine.

Bring your vehicle in to our service center at Auto Plaza Chrysler Dodge Jeep Ram in De Soto, MO for assistance with a voltmeter check. We’re here to answer your questions and help you with all aspects of your vehicle’s maintenance.

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