Posts Tagged: recharge your car battery by idling

How to Charge Your Car Battery While Parked

The Best Way to Recharge Your Car Battery While Parked You can charge your car battery while parked, but plan on idling it for almost 4 hours to fully recharge a dead battery. Some people idle their engines for 20 minutes and think that’s long enough to recharge a battery. Then they wonder why it won’t start the next day. Why? Because it takes almost 4-hours of idling to fully recharge a dead battery. How much does the alternator recharge your battery while parked? At an engine idle speed of … Read More