... , built-in green, safe rechargeable lithium polymer battery, charging your mobile phone, digital camera, PDA, PSP, mp4, MP3, IPOD and other ... of built-in lithium polymer batteries: 4,000mAh/3.7v Input Voltage:DC5.0V±0.2VInput Current:1,000mA (maximum)Output Voltage ... /MP4, PDA, PSPThis product is suitable for operating temperatures between 0 °C -45 °C, relative humidity should be ≤ 85%, atmospheric ...