How To Test Current Draw On A Car Battery

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How To Test Current Draw On A Car Battery. You can do this test at home using a digital voltmeter too. Starter Current Draw Test.

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Test for parasitic battery drain using a multimeter and amp-clamp. Some of newer vehicles can be a real pain to diagnose parasitic draw test with a multimeter due to all the added electrical circuits computers and control modules. Connect the red wire to the 10A20A input port on your multimeter.

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Start by removing the negative side battery cable from your car battery this is the black one. Parasitic Battery Drain Tests to check for a possible power drain from a load. An Advanced Auto Parts employee tests a car battery. Visually inspect the starting system for any physical defects or loose connections.