Characteristic . Maximum power at STC (P.max): 60Wp Optimum operating voltage (Vmp) : 17.4V Open-circuit voltage (Voc): 21.6V Optiumum operating current (Imp): 3.45A Short-circuit current (Isc): 3.9A Length: 771mm Width: 665mm Depth: 30mm Weight: 6.2 Kg