Amazon.co.jp: Brand New Battery for Samsung Galaxy Gear S3 Frontier SM-R760, SM-R770, SM-R765 : Electronics
How to Fix a Gear S3 Battery Drain
Just replaced my Gear S3 battery (24$ + 10$ for tools). Excited to get 3+ days back. Links in comments, will report back with new battery life in a few days. : r/GearS3
LCLEBM [430mAh] Gear S3 Frontier Battery for Samsung | Ubuy Indonesia
Eb-br760abe 380mah Original Battery For Samsung Gear S3 Frontier Gear S3 Classic Sm-r760 Sm-r770 Sm-r765 With Professional Tool - Mobile Phone Batteries - AliExpress