How Long To Drive To Charge A Car Battery. If the battery is deeply discharged 15-30 minutes on a 40-amp charger will provide charge and give the alternator a chance to finish charging the battery while driving your car. The charging time heavily depends on the car battery and the chargers power output.
The good news is that 70 miles is more than enough to charge up the battery. Answer 1 of 11. The time it takes is up to the size of your battery and how many amperes your battery is charging with.
That is being turned by the engine crankshaft.
Drive at least 30 minutes straight once a week. If that does not seem to work however car battery chargers can regenerate all of the charge into a battery. With a 50 Amp multistage battery charger it will only take you at least an hour for the car battery to attain full charge. The answer is YES yes the car battery does charge while the engine is idling.
