I tried using an extended battery "L40G4" that makes GoPro's battery last longer than three times - GIGAZINE
Amazon.com : Suptig 5200mAh Waterproof Power Bank for GoPro Hero 11 Hero 10 Hero 9 Hero 8 Hero 7 Hero 6 Hero 5 Hero 4 Hero 3+ Hero 4 Session Hero 5 Session and Digital Camera and Smartphone : Electronics
Amazon.com : SOONSUN Side Open Skeleton Housing Case for GoPro Hero 4 Black, Hero 4 Silver, Hero 3+, Hero 3 Cameras with LCD Touch Backdoor and Skeleton BacPac Backdoor for Extended Battery
TELESIN 3 Slots LED Storage Charger Box With HERO 11/10/9 Extended Battery – telesinstore
Amazon.com : Wasabi Power Extended Battery for GoPro HERO : Electronics
5200mah Waterproof External Power Battery + Skeleton Housing Case With Cable For Gopro Hero 4 3+ 3 Cameras Diving Accessories - Sports & Action Video Cameras Accessories - AliExpress
Brunton All Day 2.0 Extended Battery Pack for GoPro Hero, Hero 3+, Hero 4 - ASD
Hands-on with the GoPro Hero 3+ Black Edition: Digital Photography Review