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Replacing the Heart Rate Monitor Battery

  1. Use a small Phillips screwdriver to remove the four screws on the back of the module.
  2. Remove the cover and battery.

    Close-up view of the heart rate monitor battery being replaced
  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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