1).Solar panel:250W 2).Certification:TUV,UL1703,CSA,KAS,CE,RoHS, ... boxLifetime:25yearsWarranty:2years90% power 10 yearSpecification DataCellMono-Crystalline silicon solar cells, No. of cells and connections72seriesApplicationDC 24V systemMax. ... Cell temperature:25°C250w solar panel mono crystalline silicon solar module for PV home system 250w solar panel mono crystalline silicon solar module for PV ...