... CE,ROHS,FCC 4.Warranty:1 year Solar Power Generator1. Handiness, portability, waterproof designs2.eco-friendly ... ,overcharging, overdischargingSpecification of 20W solar power generator: Part NameItemTechnical DataSolar Power ParametersMax Output18V 20W Max Current1.1A ... 70%)CoverSize385 x 290 x 100 mm MaterialFireproof ABSFunctionCharger for household power generation system , fans, TV, computer, etc ...