Four-Day Boondock Solar Kit
400W on the roof and 200Ah in the bank is the size that stops a long weekend being a rationing exercise — lights, water pump, a 12V fridge, phones and a laptop, with the array replacing what the night took. The MPPT is sized on charge current, not model number: 400W at 12V is about 28A, so the 100/50 is the controller, and it is both cheaper and larger than the 150/45.
The parts in the one-click kit lead this list, followed by the other sizes and brands that do the same job, so you can swap a part before you buy. The whole kit, priced and loaded in one click, is on the RV power bundles page.
Camping longer or running more? The free RV Solar & Battery Calculator resizes the battery and solar from your own loads and days off-grid.
