20 Watt Solar Battery Charging Kit Designed for RVs, cabins, homes, boats, back-up and remote power use and more! Completely weatherproof for added durability Features sturdy and durable aluminum frame for extended outdoor use. Amorphous solar panel works in all daylight conditions; even on cloudy days Built-in discharge protection Kit includes: one 20 Watt amorphous solar panel, an 8.5 Amp solar charge controller, battery clamps, charge controller wire adapter and mounting hardware