Yangtze monocrystalline  250 watt solar panel is perfect for decreasing your electrical bill,Website:http://www.yangtze-power.com, or for a off-grid system. Whether you want to connect this to the electrical grid, or power your off-grid cabin, Yangtze's solar panel 250w will be the key element to your solar system.As the monocrystalline 250 watt solar panel has the key features :●10 years product warranty ,25 years linear power output warranty  ●Designed for residential and utility applications ,rooftop or ground mount ●Outstanding performance in low-light irradiance environment ●Positive power tolerance 0~+3%●Excellent mechanical load resistance, withstand high loads(2400Pa) and snow loads(5400Pa) ●High Salt and ammonia resistance certified by TUV ●100% EL double inspection ensures modules are defects free  ●Certified by TUV ,CE ,ULElectrical Parameters at STCModelYS250M-60Rated Maximum Power at STC250WMaximum Power Voltage (Vmp)30.3VMaximum Power Current (Imp)8.25AOpen Circuit Voltage (Voc)37.7VShort Circuit Current (Isc)8.76AModule Efficiency15.39%Power Tolerance 0~+3%Mechanical Parameters Cell Type Mono-crystalline 156x156mm (6inch)No.of Cells 60 (6x10)Dimension1650x990x35/40mmWeight 18.5kg (approx)Glass3.2mm, High Transmission ,Low Iron , Tempered GlassJunction Box IP65 & IP67 Rated Output Cable Section Size: 4mm² , Length: 900mmFrame Anodized Aluminum AlloyNo. of Bypass Diodes 3 & 6Connector MC4 CompatibleWorking Conditions Maximum System Voltage DC 1000V(IEC) / 600V(UL)Operating Temperature -40℃~+85℃Maximum Series Fuse 15ANOCT45±2℃Application ClassClass ATemperature CoefficientTemperature Coefficient of Pmax-0.40%/℃Temperature Coefficient of Voc-0.30%/℃Temperature Coefficient of Isc+0.05%/℃STC: Irradiance 1000W/㎡, Module Temperature 25℃, Air Mass 1.5