Replacing the HRM-Swim Battery and the HRM-Tri Battery

1. Remove the sleeve from the heart rate monitor module.

   

2. Use a small Phillips (00) screwdriver to remove the four screws on the front of the module.
3. Remove the cover and battery.
4. Wait 30 seconds.
5. Insert the new battery under the two plastic tabs with the positive side facing up.

   NOTE: Do not damage or lose the O-ring gasket.

   The O-ring gasket should remain around the outside of the raised plastic ring.

6. Replace the front cover and the four screws.

   Observe the orientation of the front cover. The raised screw should fit in the matching raised screw hole on the front cover.

   NOTE: Do not overtighten.

7. Replace the sleeve.

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