How Long To Drive A Car To Charge The Battery. By doing this you allow the alternator or dynamo in older models to recharge the battery. Weve heard a lot of people including an unnamed insurance company website offer really bad advice about just letting a car idle for a few minutes andor driving the car for up to 30 minutes to recharge the battery after its been jumped.
However always be prepared to leave the charger on overnight in case it takes longer than expected. For many drivers 100000 miles will make the battery pack a life-of-the-car component. Car with a smaller battery keeping it above fast idle for 57 minutes minimum.
Consequently when trying to charge a larger battery at that rate it will take a very long time and the battery may discharge at a greater rate than the 2-amp charge can provide.
However always be prepared to leave the charger on overnight in case it takes longer than expected. The first is as mentioned by driving around. However always be prepared to leave the charger on overnight in case it takes longer than expected. If you are driving on an open road and your engine RPM is sufficiently up it should not take more than 30 minutes for the battery to charge.
