How Do You Test A 12-Volt Car Battery Using A Voltage Instrument?
Your car’s battery doesn’t operate in a vacuum. The power demanded from its dozens of electrical components changes on a frequent basis. Therefore, properly testing a 12-volt battery requires that you simulate the two major energy states of the car’s electrical system. As long as you follow all the safety precautions, the actual technique for testing with a voltage instrument is easy to master. Turn off the car’s engine and any electrical appliances, such as headlights, fans, cabin lights, the radio and cigarette lighters. Let the car sit for nine hours. Put on the safety goggles and work gloves. Release the hood of the car and safety prop it open. Turn the multimeter’s dial to the symbol for “DC Voltage,” which consists of a capital “V” underneath two parallel, horizontal lines. The top line will be solid but the bottom line will be dotted. Touch the metal tip of the multimeter’s black probe to the metal on the battery’s negative (-) terminal. Hold it there during Step 6. Touch the me
