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Still haveing Battery Discharge problems, battery randomly goes dead even when charged all night.?


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Hi Ray

When my Mercedes had this seemingly random issue alternator output was always good. The discharge became more frequent I put a clamp ammeter on the battery and could see around a 5amp discharge so started unplugging things the discharge stopped when I unplugged the Voltage regulator a new Bosch regulator was around £50 from memory changed it no more problem. When I tested the old Voltage Regulator it had 3 diodes inside and one had failed allowing the drain.

I would start with the regulator if your changing bits as it is much the cheaper part

Dave

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