how long does it take to charge a car battery while idling

Since the battery sometimes gets hot during recharging so you need to stop charging it for some time until it gets to a normal temperature to start charging again. If theres just a little power left then you only need to let it run for about five minutes.

How Long Does It Take To Charge A Car Battery While Idling Quora

Car experts say that you want to drive around 30mph for around 30 minutes.

. About 15-20 minutes assuming the electrical load is low so fansaclightssound system mostly off and assuming the battery was fairly full to begin with and the alternator and battery work properly. Charging a car battery fully with a 12 volt charger will take around 12 to 24 hours depending on the situation. I would also recommend turning off the radio and AC while youre doing this.

This way you increase the rotation speed of the engine and therefore the rotation speed of the alternator. So you have to let yourself idle for a couple of hours. As long as the car is running the battery is being charged albeit at a slower rate than when driving.

The best way to really charge your battery is by taking a few laps. While some individuals advocate that you leave your car running to charge the battery this is not generally recommended. As a general rule of thumb you should idle your car for at least 30 minutes to charge the battery back to full capacity.

As you can see there are quite a few assumptions here. This is because there are many electrical components especially in modern cars all fighting for the little current from the alternator. You will need several hours to recharge your car battery completely.

That will give most batteries enough time to charge to full even. In idle mode however the battery does not charge as quickly. Well if youd like to charge your battery completely you should be willing to leave your battery idling for several hours.

The remainder is what goes to the battery. When the engine is running and the alternator is functioning the battery will get current all of the time. This is an excellent question because some people hate to let their car idle.

How long should I idle my car to charge the battery. 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. If you want the battery to be recharged fast you may rev the engine.

At idling the alternator will take between 15-30 minutes to fully recharge the battery. Batteries do charge when the car is idling thanks to the alternator which serves as the batterys and the cars electrical systems primary power source. If theres no power at all then youll need to let your car run for about 15 minutes or so before starting it again.

Idling your automobile for 15-20 minutes can provide enough charge to your battery to allow you to restart your vehicle but it is not necessarily beneficial to your vehicle. If slower cranking is noted a half hour drive once a week should do the trick. Car batteries do charge while idling because the alternator produces enough power to charge a battery when the car is in idle mode.

How long does it take to charge a car battery. It depends on how much power is left in the battery before you start charging it. Letting your car idle can do good to your cars engine.

How long should I let my car idle to charge the battery. How long does a car have to idle to charge the battery. How Long Do You Need To Idle A Car To Charge The Battery.

This seems to be the most efficient way to get your alternator churning and cranking electricity back into your battery. However letting your car idle for years can do damage to your car.

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