Brunton ALL DAY 2.0 Extended Battery Back F-ALLDAY2.0-BK B&H
GoPro HERO3 Battery & Charger Recommendations
Amazon.com : GoPro Battery BacPac for Hero3+ : Electronics
Extended Battery Module For GoPro 11, HERO10 Black & HERO9 Action Came – Digipower
JUICEBANK: GoPro Battery+Mount – YOLOtek
Amazon.com : Kastar GOPRO3 Battery (3-Pack) and Charger Kit for GoPro HD HERO3, HERO3+, AHDBT-302 Work with GoPro AHDBT-201, AHDBT-301, AHDBT-302 : Electronics