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Replacing the HRM‍-Dual Battery

  1. Use the included screwdriver (Torx T5) to remove the four screws on the back of the module.
    NOTE: HRM‍-Dual™ accessories produced before September 2020 use Phillips #00 screws.
  2. Remove the cover and battery.

    Exploded view of the heart rate module
  3. Wait 30 seconds.
  4. Insert the new battery with the positive side facing up.
    NOTE: Do not damage or lose the O-ring gasket.
  5. Replace the back cover and the four screws.
    NOTE: Do not overtighten.

After you replace the heart rate monitor battery, you may need to pair it with the device again.

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