@thediyworld ”I myself have no idea how much solar power comes in...”
Really? The amount of solar coming into your trailer and cabin is currently zero watts. You have no inverter, charge controller or batteries hooked up, so it’s easy to know.
The amount of useable solar going into the spank sheds is effectively zero also because your junk batteries there are dead due to the cold. No bedini weenie magic is going to fix them either.