... 1 USB output can charge for MP3,MP4, cellphone etc Product parameter:Model No.: SHT-0016W polycrystals solar panels(18v)Battery:12v ... lamp holderOutput:USB 5V, can charge for MP3,MP4, cellphone etcInput: DC charging input interface, 12V solar power panel charging, 1PCOutput interface ... CTN Meas: 460*365*420MM G.W.: 27KGS6 sets/carton solar systems for home light