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
Samsung Galaxy Watch review: Hardware and battery life
How to Fix a Gear S3 Battery Drain
Something is rapidly draining the battery of my Gear S3 Frontier - Samsung Community
Amazon.com: oGoDeal Replacement Battery for Samsung Gear S3 Frontier(SM-R760) and Gear S3 Classic 3.85V 380mAh Battery SM-R770,BR760,R765 EB-BR760ABE GH43-04699A Battery with DIY Repair Tools : Cell Phones & Accessories
Long Life 580mAh Standard Internal Battery for Samsung Gear S3 Frontier SM-R760N | eBay
Amazon.com: LCLEBM [430mAh] Gear S3 Frontier Battery for Samsung Gear S3 Frontier (SM-R760, R770, R765),Galaxy Gear S3 Classic Replacement Battery for EB-BR760ABE GH43-04699A with Professional DIY Repair Tools : Cell Phones &
Samsung Gear S3 Frontier Day 12 review - Battery life, timer, calendar, S Health Running & more - YouTube