More than 1X your battery

Weight: 55g
Capacity: 1300mAh
Cell type: Li Polymer battery
Dimension: 126×65×20(mm)
Output voltage: 5V
Output current: 500 mA max
Cycle life: 500times
Function& character:

Standby Time – Up to 240 hours
Talk Time – Up to 4 hours on 3G | Up to 8 hours on 2G
Internet Use – Up to 4 hours on 3G | Up to 4.5 hours on Wi-Fi
Audio Playback – Up to 17 hours
Video Playback – Up to 5 hours