HRM-Pro Plus Owners Manual - Replacing the Heart Rate Monitor Battery
Garmin Heart Rate Monitor Battery Change - not pairing with Forerunner / GPS Watch - Better Sore Than Sorry
Garmin HRM-Pro Battery Replacement - YouTube
Battery Replacement Instructions for Premium Feature HRM Straps | Garmin Customer Support
Garmin Fenix 3 - Garmin: Replacing the Battery in your Heart Rate Monitor ( HRM) The CR2032 batteries in your HRM-Run, HRM-Swim or HRM-Tri straps will last approximately 18 months, depending on use.
Support - Changing the battery on a Garmin Heart Rate Monitor - YouTube
Support: Changing the battery on an HRM-Pro™ Plus Heart Rate Monitor - YouTube