can my voltage reg in my alternator drain my battery

Asked by Guru9HR4GL Nov 20, 2021 at 11:39 AM about the 2007 Ford Expedition EL Eddie Bauer 4WD

Question type: Maintenance & Repair

2 Answers


I wouldn't think so , usually alternators will stop working never heard of a bad one draining the batt. What exactly is going on ?


yes, It could be possible if one of the internal diodes failed short and started drawing current from battery when car parked overnight also bad/faulty starter solenoid could draw current as well . Do a Battery Drain Test to verify At-fault electrical circuit drawing down your battery current. thanks.

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