新出的外置电池像精美的笔记本Chemistry: Li-polymer Capacity: 21200 mAh Dimension: 53.10x35.20x7.35mm Color: Light Grey Volt: 16V/4A, 19V/3.5A, 22V/3A, 24V/2.5A, USB 5V/1A
http://www.batterylink.us/external-battery.htm