Q: discarcing the batery when is off

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Discarcing the batery when the car is off

You should have the battery inspected. If the battery is not holding a charge, that is if it fails a load test, it has to be replaced. Other causes of the difficulty you are reporting are a malfunctioning charging system, high resistance in the battery cables and poor battery connections. Occasionally, it is found that the battery and charging system are OK, but there is a "phantom load" in your car’s electrical system that is drawing current even when your car is off. That fault can be found by the Mechanic using standard circuit traces.

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