ONE problem with his "details"both solar panels and your lap device run on DC so no inverter is required however a current controller is required Those Li-ion batteries are trickly. Try to charge them too fast or overcharge them can indeed resullt in battery failure. fires and explosions. I learned this the hard way with electronic cigarettes which also use Li batteries and I have te scars to prove it. check http://batteryuniversity.com/learn/article/lithium_based_batteries for morerubyluise said:It will be really great information thorough your details. I really appreciated your details. As I said before I can charge a laptop through many hours. I think before charging that according to your information I used to know about the watts. It is must necessary to check its compatibility also.sunsaver said:My new little netbook from BestBuy uses a charger that is 19volts x 1.2amps equals 22watts. I would use a 50watt panel (double my usage requirement as a general rule of thumb) with an El Cheapo brand inverter from InvertersRus.com or an outdoor goods supply, thats if all i wanted was to plug my laptop in to solar power. If you buy a solar charger already put together for that purpose, better make sure that it is the right wattage and tip polarity for your computer, else it could fry your battery, start a fire, or zap your cpu. If you have a 12volt adapter for charging your electronics from your vehicle's cigarette lighter, that device can be safely wired directly to a suitable size 12volt solar panel.