My wife and I are heading into the mountains for several weeks and will be camping off the grid.  We love our Rad Rovers and will take them along, knowing they will add to our enjoyment of exploring abandoned roads etc.  I am seeking recommendations on what others have done to charge their bikes while off the grid. We will have two bikes. Our small camper has a small solar panel to keep its battery charged.  Do I get a small gas powered generator or go with a solar powered power station?   Thanks for your guidance in advance.