I don't have the problem, my coach came with an 85 watt solar panel and controller and PO installed 2 more 125 watt panels. This keeps my batteries up and allows extended boondocking if we monitor power consumption.
But I do know that there is parasitic draw so using the batteries disconnects is the only way to prevent battery drain.
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Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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