Smart Charging: USB ports are equipped with SmartIC technology that optimizes the charging speed of the connected electronic device, regulating the intensity of the current delivered ( offer total current at 5V/2.4A maximum) Ultra light & Foldable: With a compact size (14.8x15.3x5.4cm/5.8x6.0x2.1in folded or 66x14.8x3.1cm/25.98x5.8x1.2in open), you can easily slip your solar charger into your backpack . Feature foldable solar panels, making them easier to store and transport High Energy Conversion: BigBlue 14w portable solar charger use panels from the manufacturer SunPower which achieve a yield of 24%. To obtain a good output during a very sunny day, it is necessary to place the solar panels so that the solar rays reflect perpendicularly on them IPX-4 Waterproof: The special polymer surface protects against occasional rain or wet fog. Equipped with eyelets allowing you to hook them to a backpack, a tent or even a tree. BigBlue 14w solar charger is the best choice for camping, hiking,