Car starts, but the battery loses it's charge
I have a 1997 Ford mustang and got new battery it starts fine my battery gage dont show battery is fully charged and I got a new alternator and I checked the fuses but my battery and alternator wont keep charge is anyone having this problem
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Hi,
Use a Voltmeter (function found in a digital multimeter) to check that the voltage across the battery terminals is between 13.8 - 14.5 VDC when the engine is running.
Be safety aware when you test as the engine is running!
If it is less than 13.8VDC then you will not be charging the battery.
I think that the voltage regulator is inbuilt into the alternator in your car, so since you got a new alternator you may have to check if its' output is OK and if so then check why you're not getting the correct voltage at the battery terminals.
If you can't do this yourself go to an auto electrician and get them to check.
door jayeff