The GoPro Battery BacPac
is an auxiliary lithium-ion battery pack to extend the battery life of GoPro HERO action cameras. It attaches externally, mounting flush with the back of the camera. A Type B Mini USB port on the BacPac means it can be recharged using any GoPro USB charger, a computer, or just about any other type of USB charger. It features a BacPac-compatible housing in case you do not already use one.
The Battery BacPac Limited Edition is compatible with the GoPro HD HERO 2, HERO3 and HERO3+ action cameras. However, when using the HERO3+ you will need to use the featured BacPac-compatible housing as the standard HERO3+ housing will not fit a BacPac.