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How To Perform A Battery Load Test. Only if your battery is at nearly or full charge can you use a load test. Youve probably seen your mechanic use this type of battery tester.
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How to perform a quick accurate test of a 12-volt car battery using your meters MINMAX function. If it bounces to less than 75 state-of-charge 1245 VDC 1225 specific gravity recharge the battery recharge the battery and re-load test it. Disconnect your negative and positive battery cable.
This instructional demo shows how to perform a load test and what is considered failing in regards to cranking amps and voltage.
A load test is simply to observe what percentage your battery is charged and how much more of a charge it might need before it is fully charged. Grab your prongs red goes to positive black goes to negative. Turn off the ignition and any accessories like lights or the radio in the vehicle. When you do this test on your car you want to see about 124 to 126 volts.
