laptop solar backpack in high quality 1.solar panel 5.4Watt, power supply for laptop,mobile phone, MP3/MP4 2. Material: 168 laptop solar backpack ... v li-ion battery. And turn the sun energy to be electricity energy inside of it. 3, Suitable for input 5V ... ,mobilephone, MP3/4,digital camera, electronic dictionary etc.... 4 High quality solar panel should support more than 20 year working. 5 Operation ...