Battery Doctor's Amorphous 20 Watt Solar Charger Kit includes: (1) 20 Watt Solar Panel (Part #23145) and (1) 10 Amp Solar Controller (Part #23122). Amorphous panels and kits work in all daylight conditions helping you to harness the Sun's Energy! Water resistant, shock and rust resistant. Converts daylight into electricity to charge 12 Volt batteries and extend battery life. Plastic corner sleeves prevent scratching and built-in blocking diode prevents reverse charging. Includes: E-Z Connect Adapter for Plug and Play installation, mounting holes in each corner and a bright LED current indicator at the top of the solar panel. Use with Deep Cycle, AGM, Lead-Acid and Gel-Cell 12 Volt batteries. Accessories included with the 20 Watt Amorphous Solar Panel Charger (Part #23145): 12 Volt socket cable, battery cable, 18" male 12 Volt socket adapter, 18" female 12 Volt socket adapter, 21" solar controller connecting wire, 36" alligator clips and mounting hardware. The 10 Amp Controller maintains and regulates 12 Volt batteries from overcharging and discharging and handles up to 10 Amps (120 Watts) of array current. The 10 Amp Controller includes Bullet E-Z Connectors (2 Pin, Plug and Play) and (2) LED's to show status. For use with Gel-Cell, AGM, Deep Cycle and all Lead-Acid 12 Volt batteries.