FEATURES of the Brunton SolarBoard 14 Solar Panel Completely waterproof connector Impact-thin film resists damage from gear of foot steps Amorphous cells function in all weather and light conditions Advanced laminate construction for extreme durability and waterproofing Reverse discharge protection will not discharge batteries at night High efficiency, triple junction solar technology The SPECS 14 watts, 820mA, 12 volts Dimension: 27.4 x 14.1 less than 1.5mm thick