The Battery BacPac works as both a charger for your spare HD HERO & HD HERO2 batteries and plugs into the back of both camera models to nearly double record times. Perfect for long duration time-lapse photo sessions, endurance motorsports racing or any application where you need up to 2X* the battery life.
* NOTE: actual battery life may vary.
1 Battery BacPac
1 Li-Ion Battery
1 Waterproof Door for HD HERO Housing
1 Skeleton Door for HD HERO Housing
1 USB Cable