Battery or alternator

Asked by Heartfubar Jun 19, 2016 at 08:14 PM about the 1996 Ford Mustang GT Convertible RWD

Question type: Maintenance & Repair

Battery light is on and battery acid is coming out of the
battery. Think it's over charging

1 Answer
157,435

Bob answered 7 years ago

Measure voltage engine running at the battery. Should be 13.5 to 14.7. If it is over 15, it is overcharging and the alternator is likely bad. An overcharging alternator will ruin your battery pretty quickly.

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