Will An Idling Car Charge The Battery. While idling older vehicles for 15-20 minutes may give them enough of a charge to restart this approach is generally not recommended. Driving the car is a better option but an idling engine will charge the battery as long as you dont have anything on.
You may have been sitting in your car with it running thinking if your car will keep charging your car while it is currently idling. Charging while idling will charge your battery but slowly. Also factor in the electrical load from daylight running lights and other electrical loads This is why a highway run is usually recommended if a charger is not available.
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To use an idling car as a charger is not the best idea depending on how flat the battery is the car needs to run a couple of hours to charge the battery if however you left the lights on and the battery is just too flat to start the car and you jump start it and let it idle for say 5 minutes the battery might be able to start the car again if. As I said before it is inefficient a waste of gas and causes wear and tear on your vehicle. You may have been sitting in your car with it running thinking if your car will keep charging your car while it is currently idling. Again assuming that the battery can still hold a charge.
