solar panel increases the efficiency up to 23% and live the longest. Tend to perform better than similarly rated polycrystalline solar panels at low-light conditions. This make this folding solar charger ideal for your Android smartphone, s, tablets, action cam, portable power station, DSLR camera, GPS or any other electronic device. camping solar charger looks like a briefcase and easy to carry anywhere. solar panel is more light, flexible and not easily fractured compared to Mono-crystalline Solar Panel. It can hang on your RV, tent, or just spread out on the ground to enjoy unlimited, eco-friendly power no matter where you are. USB output: 5V/4A DC output: 18V/2.77A Expand: 840*300*1.5mm Folding: 420*300*3mm Weight: 0.65kg packing list 1 x Solar Battery Charger Set