Don't know what took me so long to figure this out.. spring
camping off of the grid in the Bow valley east of Canmore this past weekend facing charge anxiety with continuous cloudy days, sub zero nights, and snow nicely accumulating on the roof top solar cell.
Seriously was finally considering it was time for that gen set. Friend of mine from further north suggested the old Canadian automotive fix.. booster cables. You can just make out the pretty blue 12ft 6 gage wires in the snow ahead of the truck.
Skied all day Sat & Sun.. came back each night and connected the cables the old fashioned way = warm nights + still lots of charge in the mornings to start the car and keep the furnace running while the supply ship was away at the slopes.. Best $26.99 I've spent in a long time.. will delay that $1000 gen set purchase a little longer ;-)