What is the normal voltage range for a car battery?

1 Answers
LeDante
07/29/25 3:55pm
For a car battery, the no-load voltage should be around 13V to be considered normal, while the loaded voltage should be above 11V. If the battery voltage falls below this loaded voltage, the engine may fail to start or experience significant difficulty starting. After starting, as the alternator begins generating electricity, the normal voltage of the car battery should range between 13.5V and 14.5V. A car battery, also known as a storage battery, is a type of battery that works by converting chemical energy into electrical energy. Car batteries are categorized into conventional lead-acid batteries, dry-charged batteries, and maintenance-free batteries. Typically, when people refer to a car battery, they mean a lead-acid battery. The normal service life of a car battery varies from 1 to 8 years, depending largely on the condition of the vehicle.
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