1.Supply for home and field working 2.Charge many kinds of digital items such as mobile phone/camera/MP4 . 3.Energy-saving Features The system charges your battery with solar power, even if cloudy day, weatherproof, Supply for mobile phones, digital cameras, electric fans, small appliances for home use, etc. Specifics:1.Size: 180*130*110mm2.Color:Blue3.solar panel:5W high efficiency(Waterproof Solar panel)4.Battery:12V/4Ah lead-acid battery5.Output:20W6.Lighting time:Single light 18-20 hrs,Double lights 8-10hrs7.Output Voltage by USB:5V8.Output Currency:1A9.With line protection to avoid full discharged and over charged.10.Usage:      2pcs LED lamps include,could light continuously for a long time.        

residential solar power system