Re: Engine Battery Drain - Is it the Prop Shaft Alternator?

Clive Chapman

You could try disconnecting the engine start battery and see if the voltage drop continues. That would establish if the continuing volts drop is actually due to a dead battery or because there’s an unexpected load remaining connected to the battery (alternator exciter coils maybe? Alternator regulator failed?).

I don’t know the Amel electrical systems so am basing this on a reasonable knowledge of car electrics. 

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