What Causes a Car Battery to Overcharge?

Answer

Causes for a car battery overcharging can be a faulty alternator. Another reason for overcharging can be heat.
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What Causes a Car Battery to Overcharge?
Battery overcharging is a common problem in vehicles today. Overcharging your battery can significantly decrease its lifespan, make it more difficult for it to turn over, lower its efficiency, and in extreme cases, can even lead to battery explosion.... More »
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Q&A Related to "What Causes a Car Battery to Overcharge?"
A car's battery will overcharge if the voltage regulator isn't working correctly. A voltage regulator is usually part of the alternator, and is used to keep a steady flow of voltage
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Most of the answers given are correct. It is a faulty voltage regulator. If you allow this to continue very long, it will ruin the battery and burn out the alternator as well. I suggest
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Defective voltage regulator.
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There are no specific causes for overcharging from an
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