Product Details  16% 5 years product warranty and 90% of 10 years,80% of 25 year  pv panel spec:Type SST 300-72M SST 295-72M SST 290-72M SST 285-72M SST 280-72M SST 275-72M SST 270-72M SST 265-72M SST 260-72M SST 255-72M Electrical typical data Pmpp [Wp] 300 295 290 285 280 275 270 265 260 255 Voc[V] 44.8 44.6 44.5 44.4 44.2 44.1 43.9 43.8 43.7 43.5 Isc[A] 8.80 8.73 8.68 8.59 8.53 8.46 8.39 8.31 8.23 8.16 Vmpp [V] 36.1 35.9 35.8 35.7 35.5 35.3 35.1 35.0 34.8 34.7 Impp [A] 8.32 8.22 8.11 7.99 7.89 7.80 7.70 7.58 7.48 7.35 Practical module efficiency 17.44% 17.15% 16.86% 16.57% 16.27% 15.98% 15.69% 15.40% 15.11% 14.82% Maximum system voitag [V] 1000 Voltage temperature coefficients -0.37%/K Current temperature coefficients +0.03%/K Power temperature coefficients -0.52%/K Series fuse rating[A] 15 Cells 6×12 pieces monocrystalline solar cells series strings (156mm×156mm) Junction box with 6 bypass diodes Cable length 900 mm, 1×4 mm2 Front glass White toughened safety glass, 3.2 mm Cell encapsulation EVA (Ethylene-Vinyl-Acetate) Back composite film Frame Anodised aluminium profile Dimensions 1956×990×50mm (L×W×H) Maximum surface load capacity tested up to 2,400 Pa according to IEC 61215 Hail maximum diameter of 25 mm with impact speed of 23 m·s-1 Temperature range 40 °C to + 85 °C