Why Your Car Won't Start Even Though the Lights Work

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Don't rule out the possibility of a dead battery just because some of the electrical components work. Batteries can sometimes run electronic devices on a low charge. Headlights, radios, and other car electronics draw very little amperage—usually no more than 20 to 30 amps. On the other hand, engine starters pull up to 300 amps all at once, which is too much power for a battery with a low charge.


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