Solar panelRated power6WLife span:20 22 yearsRated voltage17.5VRated current0.35AOpen circuit voltage21.6VShort circuit current0.39AWorking tempreture- 40 +85Cell efficency15-17%Solar panel TypeMono-silicon grade A solar cellLight source2.2W 5 LED*36pcsLife span:30000 H-50000 HBattery12V / 7.2AH.Lead-acid battery,maintenance-freeLife span: 3 5 yearsControllerIntelligent light-sensor, overcharge and overdischarge protectionLife span: 8-10 yearsBody Material: Die-cast aluminumLife span: 30 50 yearsWeight10kgsPackingFoam material inner packing anti-shaking; Environment-friendly attractive carton outter packing