How long does it take to fully charge a car battery after it's depleted?

1 Answers
SanKyle
07/29/25 6:26pm
If the car battery is depleted, it generally takes 2 to 3 hours of idling to fully charge it. However, it is not recommended to charge the battery by idling the engine in such cases. If the battery is depleted, it's advisable to take it to a professional repair shop and use a specialized charger for charging. More information about car batteries is as follows: 1. The battery is a crucial component of a car. When the engine is not running, the battery supplies power to all electrical devices in the vehicle. After starting the engine, the alternator takes over the power supply for all electrical devices, and the battery is also responsible for starting the engine. 2. The battery is a wear-and-tear part that requires regular replacement. As the number of charge and discharge cycles increases, the battery's storage capacity decreases, which may lead to difficulties in starting the car.
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