Solar Power System SRY-PS20W Model No. SRY-PS20W Solar Panel 17V/20W multi-crystalline silicon (Tempered class encapsulated) Life Time: 25 years Controller Box Minimum power consumption function, short circuit protection Over-charging protection (14.8V), Over-discharging protection (10.5V) 12V/24AH maintenance-free sealed lead-acid battery Introduction light: CHARGING/FULL (over-charging) LOW BATTERY (over-discharging) Input 1.One charging outlet for Solar Panel 2.One charging outlet for 110V/220V AC Output 1.DC 12V outlet: FOUR (for 12V light or 12V electrical appliances) 2.DC 4.5V outlet: ONE (for charging mobile phone) Accessories 2pc 12V/7W fluorescent lamps and lamp holder Power cable and 5 cell phone adapter plugs (Nokia/Motorola/Samsung/Siemens/Ericsson) 110V/220V AC charger 12V/5W DC electrical fan (optional USD10.00), 12V LED bulb (optional) Loading capacity/ Working time Two 7W fluorescent lamps/ Mobile phone charging One 10 inch white-black TV and one radio/cassette player Continuous working time: 6-8 hours Measurement Solar panel 70*58*3CM Controller box 27*13.5*21.5CM Weight Solar panel 3Kg Controller box 11.5Kg