... 3.Output voltage:DC3-9V,12-16.8V Solar charger S-B401Desp:Solar bag with four solar panels, can charge laptop,mobile phone/mp3 ... ,mp4/ radio/digital camera/music playerSpec:1.Solar Panel:18V,220MA,4.2W2.Input voltage:DC18V, 750MA3.Output ... 8pcs/ctn2.Meas:60*50*58cm3.G.W/N.W:18.6/17.6KGS Solar laptop charger (GF-S-B401) (laptop solar charger/solar battery charger)