This test will reveal whether or not your battery is fully charged. Part 1 of 2: Test the battery. In order to safely and efficiently test your battery, you need a couple of basic tools. Materials Needed. Safety glasses; Protective gloves; Digital multimeter; Step 1: Find the battery. The first step is to locate the battery. read more
To check whether your battery has reached the leaking point, use a multimeter. Set your voltmeter to a low setting on the voltage scale. Turn on the voltmeter. Then touch the battery negative terminal (-) with the black probe from your meter, and touch the dirty battery cover with the red probe. read more
To test a car battery with a multimeter, set the multimeter to measure DC voltage, and set the dial to 20 volts; with the car off, disconnect the battery cables and attach the multimeter leads to the positive and negative posts on the battery. read more