How Long To Let Car Run After Dead Battery. A batterys job is to start the engine and then its the job of the alternator to produce all the amps needed to run all the electrical demands of the car. If it is on this may mean that the alternator is not charging the battery and the driver should not run the vehicle very long.
If it isnt charging the car could actually die while you are driving it. Click to see full answer Subsequently one may also ask do you need to replace car battery after jump start. 35 years of experience.
How Long to Drive A Car To Recharge the Battery Again there is no specific correct answer.
Driving it might not charge a car battery either. If it is on this may mean that the alternator is not charging the battery and the driver should not run the vehicle very long. This will let the alternator fully charge the battery. A few months ago I had to start an oldish friends car that was left parked for a month.
