... status of battery,charging,mistake,the connection of AC and DC output. 5.With intelligent control, ... overload,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. ...