Maximum power (Wp): 15W Maximum power voltage (V): 17.2 Maximum power current (A): 0.88 Open circuit voltage (V): 21.6 Short circuit current (A): 1.06 Surface Maximum Load Capacity: 60m/s (200kg/sq.m) Weight per piece (kg): 2.2 Junction Box Type: PPO, black Connectors and Cables Type: 4mm2 Length of Cables (mm): 300 Cell Efficiency (%): 15 Module Efficiency (%): 12.35 Output tolerance (%): ?% Frame (Material, Corners, etc.): Anodized Aluminum Alloy Standard Test Conditions: AM1.5 100MW/c(C) 25 FF (%): =73.3%Guarantee of power: 90% within 10 years, 80% within 25 years Warranty: 4 years