... camera, Mp3, Mp4 3, USB 4, outdoor thin film solar panel1, portable solar film panel2, apply for mobile phone, laptop, PC, camera ... 1-3 hoursC, digital camera rechargeable 1-3 hoursD, PDA charger 1-3 hoursE, MP3 player charging 1-3 hoursF, portable ... weather, seasons, equipment and other factors TroubleshootingI, check the solar power panel and device connection. See operation schematic diagramJ, check ...