How many hours does it take to fully charge a car battery?

[VonElle]

A depleted car battery typically takes about 4 hours of driving to fully recharge. Here is relevant information: 1. The alternator in a car needs to operate at over 2000 RPM to reach full load capacity, at which point its power generation meets the standard value indicated on the nameplate. However, it is generally not recommended to use the car's alternator to charge a completely dead battery. 2. Some older car models do not support automatic power cut-off after the engine is turned off, so it is necessary to manually turn off the headlights and interior reading lights before shutting down the engine. If you need to find something in the car or require lighting, you can use a mobile phone or flashlight to avoid forgetting to turn off the reading light, which could lead to battery drain.