08-11-2019, 12:35 PM
I agree with misdirection (and don't know why I didn't think of it). Overcharging a battery will definitely give off that kind of smell. And if you boat is like mine there are multiple ways it could enter the cabin. There is a bathroom fan vent that goes directly into the engine room. When not running the fan it could very well back flow the odor.
Look at the batteries and see if one or all are gassing off while charging.
Look at the batteries and see if one or all are gassing off while charging.


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