Why does my Heart Rate Monitor not work since I replaced the battery?

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Each version of the Garmin Heart Rate Monitor utilizes a CR2032 battery. If a battery is placed in the device too soon after the old battery is removed, it can cause the accessory to experience a power overload causing the device to fail to operate.

To prevent a power overload for your accessory:

  1. Remove old battery
  2. Wait 10 minutes to allow the module to discharge completely (Alternatively you can insert a small coin in place of the battery ensuring that the coin bridges both contacts which will immediately discharge the module)
  3. Install new battery

The heart rate monitor should now work. This process may need to be repeated if the monitor still does not display heart rate.

It may be necessary to rescan for your accessory after replacing the battery.

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