Solar chargers are quite useful to have with you outdoors. The SUNLABZ Solar Backpack is designed to keep your gadgets charged everywhere you go. It is capable of charging iPhones, Samsung smartphones, battery packs, GPS devices, and mp3 players. The backpack features highly efficient solar cells with 22% efficiency rate. You get to charge your devices directly from the USB port (5V).
The Solar Charger Backpack is available in 7W and 13W versions. It comes with a hydration pack and various pockets for your gear. It weighs only 2.6 lbs.