Maximum power (Wp): 210W 220W Maximum power voltage (V): 44 42.5 Maximum power current (A) 4.77 5.17 Open circuit voltage (V): 51.7 45 Short circuit current (A): 5.49 5.6 Number of cells (Pcs): 91(7*13) 91(7*13) Size of module (mm): 1702*945*45 1702*945*45 Weight per piece (kg): 18 19 Length of Cables (mm): 900 900 Frame (Material, Corners, etc.): Anodized Aluminum Alloy Anodized Aluminum Alloy