Can You Charge Car Battery By Idling. If your car sits idle for extended periods of time it can slowly lose the charge in its battery. Car batteries will charge at idle as long as your alternator is functioning properly and there are no weak connection points.
There is a very simple trick that you can do to keep your car battery charged when the car is not in use. When the car is idling there is no load on the engine but some processes will run during this time such as. Yes the alternator does charge the battery while the car is idling - regardless of the load on the battery.
Yes the alternator does charge the battery while the car is idling - regardless of the load on the battery.
Again I encourage you to watch the video above this answer will make more sense. It will contaminate the cars oil faster which offers less protection for your engine. If you find any of these cars start easily the starter spins quickly battery status is likely quite good and a short drive or idling for 10 to 15 minutes may be adequate to keep the battery full if done once every two weeks. Idling for too long can cause problems for your car also.
