Cadence sensor battery

The battery cannot be replaced. The sensor is sealed in order to maximize mechanical longevity and reliability. To purchase a new sensor, contact your authorized Polar Service or retailer. You can also purchase sensors online. Go to www.polar.com to find your own country's shoppolar online store.

The battery level of your sensor is displayed on the receiving device if it supports Bluetooth® Battery Service.

To increase battery life, the sensor goes into standby mode in thirty minutes if you stop cycling and the magnet is not passing the sensor.