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Amazon.com: Suptig Portable Charger, 7800mAh Battery Pack Power Bank, Compatible for Gopro Hero 12 11 10 9 8 7 6 5 4 3 3+ Hero Session Hero + DJI osmo AKASO Insta 360 Digital Camera Phone and More (Black) : Electronics
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Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics
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I tried using an extended battery "L40G4" that makes GoPro's battery last longer than three times - GIGAZINE
![Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics](https://m.media-amazon.com/images/I/61x-uTJDRWL.jpg)
Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics
![Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics Amazon.com : GoPro Rechargeable Battery for HERO4 Black/HERO4 Silver (GoPro Official Accessory) : Electronics](https://m.media-amazon.com/images/I/61x-uTJDRWL._AC_UF1000,1000_QL80_.jpg)