Small Solar Panel (5W,Poly) 1.Life span: 25 years 2.High efficiency ... Panel (5W,Poly)1,Life span: 25 years2,High efficiency polycrystalline3,TUV certified junction box 4, One year limited warranty on ... material and workmanship, 25 years limited warranty on power output. Electrical Specifications ... )V/°C 2012 New Small Solar Panel (5W,Poly)