There is a loud whining, which is rather high-pitched, coming from the passenger side, just behind the firewall under the hood. This noise is louder inside the car, and only stops when we remove the cable from the battery. As soon as the cable is put back on the battery, the whining starts again.
Two things it would be 1 your battery could be bad even if it is not
dead and will start your car it could have a bad cell
the other thing could be the belt is loose and not letting the alternator
spin fast to charge the battery so it slips on the belt but thats what the noise is the belt check the battery at autozone for free
and if thats not it its the belt
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