... ,long life 3,easy installation 4,high wind and hail impact resistance Polycrystalline Solar Panel--270w1,SpecificationWeight:23kgCell:156mm ×156mmNumber of Cell:72 ... theIndicatedValues of Isc ,Voc , and Pmax under Standard Test Conditions3,LimitsOperating temperature-40 to +85°cMaximum system voltage1000 V DC 4,Temperature ...