How to Check the Voltage of a Car Battery?

1 Answers
RubyLynn
07/29/25 3:17pm
The voltage of a car battery can be found on: the battery's packaging or user manual. Below are some important precautions regarding battery usage: 1. Charging: Start the car periodically to charge the battery. When removing the two electrodes from the battery, note that you should first disconnect the negative electrode cable from the terminal post, or remove the connection between the negative terminal and the car chassis, before disconnecting the positive end marked with a (+) sign. 2. Replacement: Car batteries have a limited lifespan and need replacement after a certain period. When reconnecting the electrode cables during replacement, connect the positive terminal first, followed by the negative terminal. 3. Fluid replenishment: If the electrolyte level is low, add distilled water or a dedicated replenishment fluid. Never use drinking purified water as a substitute, as it contains various trace elements that can adversely affect the battery.
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