How to Test if the Battery Has Power?

1 Answers
DeJake
07/24/25 3:56am
Methods to test if the battery has power: 1. Use a multimeter to test. Adjust the dial to the voltage V setting, connect the red and black probes to the two terminals of the battery, and check the voltage display. A reading of 12V indicates the battery is at normal voltage. 2. Check through the battery's observation window. If the observation window shows green, it means the battery has sufficient power and is functioning normally. 3. Use a test light to check the battery's power. Connect both ends of the test light to the battery's terminals. If the test light bulb shines normally, it indicates the battery has normal power. Generally, if the car battery voltage drops below 9V, it may already have difficulty starting the engine. However, there's no need to worry too much. Simply driving normally for one to two hours can restore the battery to normal power. But if the situation is severe to the point where the engine cannot be started, a jump start may be required to activate the generator.
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