Can Car Battery Charge While Idling. Again I encourage you to watch the video above this answer will be more meaningful. It will contaminate the cars oil faster which offers less protection for your engine.

The answer is YES yes the car battery does charge while the engine is idling. Georgetown Junior Member. It will contaminate the cars oil faster which offers less protection for your engine.
Because the generator is in the battery itself.
Georgetown Junior Member. Again I encourage you to watch the video above this answer will be more meaningful. Because the generator is in the battery itself. Then the alternator is producing AC current thereby charging the battery while your car is idling.
