... 4.2W 2.Input voltage:DC18V, 750MA 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 ... 32.5WH)5.16*6CM*4pcs Solar boardPacking:1.Packing:1pc/opp ... 17.6KGS Solar laptop charger (GF-S-B401) (laptop solar charger/solar battery charger)