Battery Elim. USB for Hero4 with Backdoor – Core SWX
Rear Back Door Cover Case Unit For Gopro Hero 3 Hero3 Black Repair With Battery Box Housing - Body Parts - AliExpress
Rear Back Door Cover Case Unit For GoPro Hero 3+ Hero3+ Black/silver Edition with Battery Box Housing Camera Repair Part _ - AliExpress Mobile
Amazon.com : Waterproof BacPac Back Door Case for GoPro BacPac LCD Screen/Expansion Extended Battery BacPac, for GoPro Hero 3 Original Housing Case : Electronics
Gopro Battery Door Mount – ProBike3D
Gopro Battery Door Mount – ProBike3D
Amazon.com : Waterproof BacPac Back Door Case for GoPro BacPac LCD Screen/Expansion Extended Battery BacPac, for GoPro Hero 3 Original Housing Case : Electronics
Black lens cap+battery back door+side door cover for gopro hero 3+/4 camera | eBay
GoPro® HERO® 3+/3 Battery Door – Peau Productions
Amazon.com : GoPro Battery BacPac for HERO3 Cameras (Discontinued by Manufacturer) : Electronics