Solar Charging

Solar and lithium were made for each other, but only if the panels, wiring and controller are set up right. This section covers charging a LiFePO4 bank from the sun for RVs, vans and boats. We compare MPPT and PWM controllers, show how to size an array for your battery, and explain the controller settings that actually matter for lithium. You will also find real boondocking power math, series versus parallel panel wiring, portable versus rooftop setups, and what to expect on cloudy days and in winter. The goal is a system that keeps your bank topped up without guesswork. Whether you run 100 watts or 1,200, start with the guide that matches your setup.