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Replacing the Cadence Sensor Battery

The device uses one CR2032 battery. The LED flashes red to indicate a low battery level after two revolutions.

  1. Locate the circular battery cover Callout number one on the back of the sensor.

    Exploded view of the accessory with callouts
  2. Twist the cover counter-clockwise until the marker points to unlocked and the cover is loose enough to remove.
  3. Remove the cover and the battery Callout number two.
  4. Wait 30 seconds.
  5. Insert the new battery into the cover, observing polarity.
    NOTE: Do not damage or lose the O-ring gasket.
  6. Twist the cover clockwise until the marker points to locked.
    NOTE: The LED flashes red and green for a few seconds after battery replacement. When the LED flashes green and then stops flashing, the device is active and ready to send data.
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