Amazon.com: Synergy Digital Smartwatch Battery, Works with Garmin Fenix 3 HR Smartwatch, (Li-Pol, 3.7V, 300mAh) Ultra High Capacity, Compatible with Garmin 361-00034-02 Battery : Electronics
361-00034-02 Battery for Garmin Fenix 3 / Fenix 3 HR
Cameron Sino 300mah Smartwatch Battery 361-00034-02 For Garmin Fenix 3, Fenix 3 Hr, Cs-gmf300sh - Digital Batteries - AliExpress
300mAh 361-00034-02, FLPB342735-P1 Battery Replacement for Garmin Fenix 3 and Fenix 3 HR Fitness GPS Smartwatch with Installation Tools - Newegg.com
Garmin Fenix 3 HR review: Train, explore, and track life without compromise | ZDNET
Fenix 3HR sapphire. Still going strong! : r/GarminFenix
Original Replacement Battery 361-00034-02 For Garmin Fenix 3 Fenix3 F3 HR GPS sports watch battery 290mAh - AliExpress