The GOPRO Battery BacPac (2014) is a lightweight attachment for your GoPro camera, which doubles your battery capacity when connected via the rear port. Your camera will use the battery stored in your Battery BacPac before automatically switching to the battery built into your camera. There's no need to worry as switching the power supply won't affect your camerawork. This version of Battery BacPac also serves as an external charger which you can easily connect to a PC or network using a USB adapter. It's compatible with all GoPro cameras except for the HD HERO 960 camera.
GoPro cameras (except model 960 HD Hero)
Rechargeable Li-ion Battery
Standard BacPac Backfloor + Standard BacPac Backdoor