... lithium battery, it could be used as back up power for a lot of devices and provide two output voltages at ... charge laptop , camcorder, mobile phone, iPOD, iPhone, PSP, PMP, MP3, MP4,DVR, portable DVD, pocket mini projector, PDA, walkie talkie, Illumination lighting, karaoke ... laptop , camcorder, mobile phone, MP3, MP4,DVR, portable DVD, pocket mini projector, PDA, walkie