Solar backpack,solar bag,solar energy backpack. 1)power supply for laptop,mobile phone,MP3/MP4 2)Solar Panel:18V,180MA,3.24W Solar bag with four solar ... charge mobile phone/mp3,mp4/radio/digital camera/ipod. Solar Panel:18V,180MA,3.24WInput voltage:DC18V,600MAOutput voltage:DC3 ... The three solar panels are tough, light weight, waterproof, and generate up to 4 watts of power. The Voltaic Backpack is ...