... , safe rechargeable lithium polymer battery, charging your mobile phone, digital camera, PDA, PSP, mp4, MP3, ... :about 4 hoursCycle life: >500 times Applications: mobile phone, as Motorola, Samsung, Sony Ericsson, Siemens, LG, ... 0V ± 0.2V output voltage of the adapter or computer USB port to charge the product. ... please understand.15. A small part of the phone can not use this product for internal voltage. ...