Does idling the car charge the battery?

[MaxLee]

Periodically starting the engine and idling can charge the car battery. Here are the reasons why idling can charge the battery: 1. The charging principle of a car is that the engine drives the alternator to work when running. The alternating current generated by the alternator needs to be converted into direct current, and voltage reduction and current limiting operations must be performed before it can enter the battery. In other words, if you observe that the alternator is working or the battery indicator light on the dashboard is off, it means the battery is charging. If the battery indicator light is on, it indicates a fault in the charging system, preventing charging. 2. In daily car use, 90% of people have the habit of idling the car. However, modern engine structures and the quality of oil lubrication have significantly improved compared to older carburetor engines. Even if idling is necessary, it only requires about 30 seconds. If possible, vehicles that are parked for long periods should be driven a certain distance regularly. Even a slow drive in the parking lot for over ten minutes can charge the car battery, fully warm up and lubricate the engine and transmission, and prevent localized deformation of tires caused by long-term parking.