... Compatibility.Easy installation and simple and convenient use, portable carry-onLong lifespan, Low-cost, very economic. ... Village, Country area, Camping ,Adventure Activity etcFeatures Solar power charge, easy to useLong working life, ... Turn off “5V OUTPUT” USB output interface“SOLAR INPUT” Solar panel input “12V OUTPUT” 2pcs of DC ... qusetion. High efficiency Ultralight Ultrathin Portable solar charger