How long does it take to charge a car battery while driving?

[JuliaFitz]

Automotive batteries are typically 12V each. When charging such a battery from a completely discharged state, the general charging time is 8 to 10 hours. Precautions for charging car batteries are as follows: 1. Home charging current is 5A: This allows for faster charging, usually completed in 8-10 hours. Since the battery is used to power the car, if the vehicle's charging system is functioning properly, there's no need to waste time charging it separately, as the car will charge the battery while driving. 2. If planning to stop using the vehicle: If you intend to stop using the vehicle for an extended period, such as one month, you can remove the battery and charge it for 5-8 hours. Before charging, pay attention to the battery type: for flooded batteries, check if the electrolyte level is sufficient; for dry batteries, avoid using too high current as it may damage the battery. 3. Do not exceed 1/5 of the battery capacity in charging current: The charging current should not exceed 1/5 of the battery capacity, especially for older batteries, and the charging duration should not be too long. Calculate the charging time proportionally based on capacity - for example, a 50Ah battery charged at 5A would require 10 hours.