Rick's Free Auto Repair Advice

Posts Tagged: charge battery by driving

Charge a car battery after jump start

How to charge a car battery after jump start If you think you can jump start a dead car battery and let it idle to charge a car battery, you’ll be mighty disappointed. Idling a dead battery to recharge it won’t work. Driving it might not charge a car battery either. An alternator needs power to generate power An alternator generates power by passing an electromagnet across a stationary coil of wire. In other words, it needs power to make the electromagnet in the first place. An alternator isn’t like … Read More


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