Garmin Fenix 3 HR Batteries
Get a new battery for your Garmin Fenix 3 HR and bring your smartwatch back to life!
iFixit has you covered with batteries and free repair guides. Repair with confidence! Our replacement batteries are tested to rigorous standards and backed by our industry-leading warranty.
Garmin Fenix 3 and 3 HR Battery
Replace a 300 mAh battery compatible with the Garmin Fenix 3 or Fenix 3HR smartwatch. 1.11 Watt Hours (Wh). 3.7 Volts (V).
The Fenix 3 HR was released by Garmin in 2015. This model features a 3 cm display with 218 x 218 resolution, an optical heart rate sensor, and weighs approximately 86.1 grams. This model also boasts a 16 hour battery life in GPS mode and up to 40 hour battery life in UltraTrac mode.