I had one heck of a power drain on my Berkshire, when in storage, with with all the switches turned off, and the battery disconnects turned to off. I put 2 Renogy 150 watt solar panels (=300 watts) and get 17.2 amps sun power recharging the batteries. Since putting in the solar panels, my batteries stay charged!
Larry [US Army-Ret/Department of the Army Civilian-Ret/DAV];with Diane [Teacher-Ret]; 'Litabit' & 'QTπ' [Westies]; 2016 Berkshire XL 40RB/380 Turbo Diesel - 2015 Jeep Wrangler Sahara Life is GOOD
Little Rock, Arkansas