How to Test Your Car’s Battery

Extreme temperatures can affect your vehicle’s battery and create a slow start or problems with keeping the engine running. There are some measures you can take to test the battery if you suspect it may not be charging at full capacity. Check the fluid level in the cells prior to running a voltage test.

If you have a voltmeter, the volts should measure 12.6 or higher when the battery is charged. Measured while the engine’s running, they should 13.7 and 14.7. When you don’t have a voltmeter handy, you can still get a good electrical system read. Start the vehicle and turn on the headlights. If they are dimly lit, that’s an indicator there’s not enough charge. The battery is keeping the system charged without assistance from the alternator. Check the lights as you rev the engine. Brighter lights at that point indicate some of the alternator’s current is charging. Unless the lights maintain constant brightness, you may need an alternator replacement soon.

We would be happy to assist you in testing your battery’s charging system. Bring your vehicle by the Audi Pensacola auto service department and speak with a member of our knowledgeable staff.

Categories: Service

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