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Battery not charging whilst engine running - 5 Series BMW Cars & Trucks

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Hi,
Please check your alternator for malfunction. Usually the problem on any alternator is the regulator/ rectifier that change AC voltage to DC voltage to charge the battery.
Regards

Posted on Mar 12, 2011

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Sounds like you have a bad alternator. You can verify if you have a volt meter. Attach voltmeter to your battery and it should read between 13.1v - 15.8v, anything less you need an alternator. Good sources = BavAuto.com & Pelicanparts.com

Posted on Mar 12, 2011

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