5 years quality guarantee; high performance cell model power: 235wpmodel power voltage: 30vmodel power current: 7.94Aopen circuit voltage: 36.79vopen circuit current: 8.4Awarranty: 5 years on materials and workmanship 10-year power output not less than 90% and 25-year 80%certificate: iso9001, golden sun, TUV, IEC61215&61730,MCS... 230w polycrystalline pv module