Garmin · Cycling & fitness
Garmin HRM-Pro Plus battery
1 × 3V lithium coin cell
How to replace it
| Compartment | Battery door on module |
|---|---|
| How to open | Remove sleeve; press tab and rotate battery door counter-clockwise to unlock |
| Orientation | Negative (−) side facing up in the battery door |
| Notes | Wait 30 seconds before inserting the new battery. Door must sit flush before locking. |
| Access | Tool-free |
Sources
Helpful for this device
Optional tools for opening, testing or charging — separate from the battery answer.
- Coin cell / button cell battery tester
Quick check of CR / LR / SR button and coin cells before fitting
- Fluke 101 Digital Multimeter
Accurate open-circuit voltage and basic electrical checks
- Digital multimeter
Measure open-circuit voltage and general electronics checks
New battery but still not working?
A fresh 1 × CR2032 should restore Garmin HRM-Pro Plus if the battery was the problem. Work through the checks below before replacing the device.
- Check orientation
Confirm the cell is seated correctly: Negative (−) side facing up in the battery door
- Check the battery type
This device needs 1 × CR2032 (lithium). Rechargeable cells are not supported for this device. Same size does not always mean the same battery.
- Confirm the battery itself
For most coin cells, fitting a known-good fresh cell of the correct code is simpler than capacity testing.
- Still not responding?
If a correct, fresh battery installed properly does not restore the device, the fault may be elsewhere — the device may need service or replacement.
Need to replace the device?
Garmin HRM-Pro Plus is still sold new. Only buy another if a fresh battery and the checks above did not help.