305W MONO SOLAR PANEL FROM HETECH ENERGY Electrical Characteristic: Module Type HT-M305W-72P Peak power 305W 0-+3%Toleracne Optimum Operating Voltage(Vmp) 36.8V Optimum Operating Current(Imp) 8.28A Open-Circuit Voltage(Voc) 44.5V Short-Circuit Current(Isc) 9.11A Maximum system voltage DC1000V Warranty: 5 years product defect warranty. 25 years power output warranty: 90% in 10 years, 80% of 25 years. Mechanical Characteristics: Module type HT-M305W-72P Size 1956-992-45mm Weight 27kg No. of Cells 72(6-12) pcs Cell dimension Mono 156-156mm Front cover 4.0 mm (0.16 inches) tempered glass Frame Anodized aluminum alloy Junction Box IP67/IP65 rated Connectors MC4