Made of mono-crystalline solar silicone cells Peak power: 200 watts (day time with fully sun shine) Open voltage circuit (voc):57.4V Max. power voltage (Vmp): 46.4V Max. power current (Imp): 4.31A Short circuit current (Isc): 4.78A Cells in series: 96pcs Nominal working temperature: -20℃ to +40℃ Dimensions: 1602x1061x40mm Weight: less than 19kg Working life: more than 25 years