How long does a car have to run to charge a dead battery?
How long does a car have to run to charge a dead battery? Remember: After you've done a jump start, you'll need to keep the vehicle's engine running for around 30 minutes to allow the alternator time to charge the battery sufficiently. How long does it take to charge a dead car battery with jumper cables? To fully charge the battery you would need to let the other vehicle charge it for about 30-45mins. Because once its charged up enough the car is gonna run off the battery and it won't be making it 15 miles. How long can you...