The Sunforce 50033 15 Watt Solar Charging Kit gives you several more reasons to love the sun. Ideal for cabins, recreational vehicles, remote power, back-up power, and 12 Volt battery charging, this kit comes with everything you need to start producing up to 15 Watts/1A of clean, free power in all weather conditions. Made of durable ABS plastic and amorphous solar cells, the solar panel has a built-in blocking diode to protect battery discharge at night. The complete kit includes: a 15 Watt solar charging panel, pre- cut holes for easy installation, 4 stainless steel screws, battery clamps, CLA adapter, wire and a 7 Amp charge controller for battery overcharge protection. This unit has a maximum power output of 15 Watts; 1 Amp and a maximum temperature range of -40 to 176-degrees Fahrenheit.