Big solar panel 280W Electrical characteristics Model SGP-280 Peak power(WP) 280W Voltage at Pmax(Vmp) 35.20 Current at Pmax(Imp) 7.95 Open circuit voltage(Voc) 44.7 Short circuit current(Isc) 8.29 Efficiency 15.98% Operating Temperature -40 to +85 Max system voltage 1000V DC We are manufacturer for solar panels(foldable solar panels, round solar panel)poly and mono crystalline from 0.65w to 290w, more size are avalibale, customize acceptable. We welcome your enquiry, thank you!.