Description: <br /><br />Battery Capacity: 20000mAh 3.85V ( 77Wh )<br />Battery Core: Polymer<br />Interface: Micro USB(input)， USB(output)<br />Input: DC 5V/2A， 9V/2A， 12V/1.5A<br />Output: 2* DC 5.1V/2.4A， 9V/2A 12V/1.5A (18W Max)<br />Charging Time: ab