Garmin HRM-Pro, Premium Heart Rate Strap, Real-Time Heart Rate Data and Running Dynamics Black Bundle with 5 Extra Batteries (6 Items) : Amazon.sg: Sporting Goods
Support: Changing the battery on a Garmin Heart Rate Monitor - YouTube
HRM-Pro Plus Owner's Manual - Replacing the Heart Rate Monitor Battery
Garmin HRM-Pro™ Plus | Heart Rate Monitor
Forerunner 920XT - Replacing the HRM-Swim Battery and the HRM-Tri Battery
HRM-Pro Plus Owner's Manual - Replacing the Heart Rate Monitor Battery
HRM-Pro-battery-replacement - OneManEngine
Support - Changing the battery on a Garmin Heart Rate Monitor - YouTube
Changed batteries, but my heart rate is still capped at 70-80 bpm. Is it possible to salvage this or is it time to buy a new one? : r/Garmin