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Q: will not hold a charge

asked by on

battery wont hold a charge

My car has 39000 miles.
My car has a manual transmission.

A: The battery and charging system will need t...

The battery and charging system will need to be tested to see if the battery can be charged and handles a load test. If battery fails this test then it should be replaced first. After the battery is tested and replaced (if needed), then the alternator can be tested to make sure it is charging the battery to keep the voltage above 13.2 volts and below 14 volts. If the alternator amperage output of about 60 amps is not within 90% of rated capacity then replace it. The alternator may be a higher rated alternator and should test at 90% rated amperage capacity. A YourMechanic certified technician can be dispatched to your location to perform a Battery will not hold a charge Inspection on your vehicle and verify what the issue is, as well as make any necessary repairs.

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