This is also my problem. Brand new battery and already losing charge. I was also told the same information. Chassis battery charged when driving. House batteries should charge chassis battery. And then i was told about the switch that should stop the charge so it wont lose the charge. But this button is only found on diesel engines.
Im definitely not able to explain in detail about all the confusion ive experienced. Brand new 2019 29m windsport. Had i known it would be this much work, i would not have purchased. No one has the right answer and everything seems to be a work a round.
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