Electrical characteristics:--Max. power: 80Wp--Open current voltage (V): 21.88--Short circuit current (A): 4.98--Max. power voltage (V): 17.64--Max. power current (A): 4.54--Temperature coefficients of Im (%): +0.08oC--Temperature coefficients of Vm (%): -0.33oC--Weight: 8.2kg--Dimensions: 1,217 x 555 x 34mm