... .charge laptop,pda,cellphone,camera,dvr,mp3... Notebook BatteryThe products is a commercial portable power with high capacity build-in lithium battery ... , camcorder, mobile phone, iPOD, iPhone, PSP, PMP, MP3, MP4,DVR, portable DVD, pocket mini projector, PDA, walkie talkie, Illumination lighting, karaoke ... :about 6 hours, depending on the capacity and charging current; Notebook Battery 33000mah