Product Specification/Models Maximum power( Pmax): 10W Open circuit voltage (Voc): 21.92V Short-circuit current (Isc): 0.63A Maximum voltage (Vmp): 16.95V Maximum current(Imp): 0.59A Power output tolerance: +/- 3% Solar Cell: 156 Poly Number of Cell (PCS): 4*9 (36) Size of Module: 356*288*18mm Weight Per piece: 1.33Kg