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Car Batteries

Is it the alternator if the car starts then after 10 hours the battery goes dead and does not start but after running for a few minutes starts again?


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Wiki User
2005-08-02 10:16:47
2005-08-02 10:16:47

Most likely it will not be the alternator. It sounds as though the alternator is working very well. It will be a faulty battery or a battery drain due to something left on or shorted out. Usually a boot light or glovebox light or recently fitted stereo.

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The battery "starts" the car...after that the alternator keeps the battery charged. They work together in other words.

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Because the alternator keeps the battery charged when the car is running.

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The answer is no . The battery starts you vehicle , the alternator charges the battery so if your alternator is bad your battery is not receiving a charge which will cause a "no start" condition.

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probably has a bad alternator. With the car running use a digital multimeter an you should have 13 + volts (as high as 14.5+) at the battery terminals if the alternator is working. If only 12 volts or so then check the alternator.

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It sounds like your alternator is no longer recharging your battery. You probably need a new alternator.


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