Item NO : BSK-50W Maximum Power(Wp): 50W Maximum Power Voltage(V): 17.5V Maximum Power Current(A): 2.86A Open Circuit Voltage(V): 21.6V Short Circuit Current(A): 3.5A Size of Module(mm): 826mm X 556mm X 35mm Size of Module(mm): 820mm X 550mm X 3.2mm Size of solar cells(mm): 125mm X 83mm Number of cells(Pcs): 36pcs Maximum System Voltage(V): 1000V Temperature Coefficients of Isc(%): 0.058 %/ Temperature Coefficients of Voc(%): 0.367%/ Temperature Coefficients of Pm(%): 0.485%/ Nominal operating cell temperature: 44.42 Temperature Range: 40 + 90 Surface Maximum Load Capacity: 200kgs/m2 Allowable Hail Load: 25mm@80km/h Weight Per Piece (kg): 6.0kgs Frame(Material,Corners,etc): Aluminum Warranty : 5 years product warranty and 10 years 90% of power,25 years with 80% power. 10pcs per carton and with pallet together.