Item PVL-CIS-20w-A PVL-CIS-20w-BMaximum Power(W) 20W 22WMaximum Power Voltage(Vmp) 17.3 17.3Maximum Power Current(Imp) 1.16 1.27Open circuit Voltage(Voc) 24.2 24.2Short circuit Current(Isc) 1.53 1.68CIS is a new version thin-film solar cell with 6 advantages in applicationA cost-effective solution based on the thin-film technologyNever affected by silicon shortageIt is environment friendly product without the elements of Pb and CdNo degradation and 12% Hi-efficiency. Its performance is better than Amorphous Si.It ensures maximum power output under the shadow and adverse weather conditions.Wide-broad of spectrum comparing with crystalline cell.