... ,steady photovoltaic 3,High efficiency:17% solar PV module1,Certification:CE ,TUV,ISO ... steady photovoltaic 3,High efficiency:17% Solar battery panelITEM NO.:NZX-60WM18VSolar Cell: ... Per Piece(KG)5.9Cell Efficiency for 180W(%)>17%Frame(Material Corners,etc.) ... for the whole product, for the power,90% for 10 years, 80% for 25 yearsStandard Test ConditionsAM1.5 1000W/ 25 +/-2°C FF (%)73% 60W---solar ...