Product performance description: 1.Special Designed for all mobile phone,camera,PSP,PDA/MP3/MP4 player and so on 2.High quality Li-ion battery ,over 500 times life cycle. 3.Uilt-in proprietary software to control and regulate temperature, voltage and current. 4.Smart capacity display ,multiple protection ,safe and high efficiency. 5.Clear & simple design ,mobile and portable. 6.High security: protection for overcharge, over discharge, overloading, and short circuit.