Solar laotop backpack 1.Solar Panel:20V,220MA,4.2W 2.Battery:3.7V 8800MAH ... laptop,cellphone tec. Product Name: Solar Laptop BackpackModel No.: STB-30 Specifications:1. Solar bag with three solar panels, can charge laptop, mobile ... phone/mp3, mp4/ radio/digital camera/ipod 2. Solar Panel:20V,220MA,4.2W3. Input voltage:DC18V, 750MA4. Output ...