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Battery
The batteries cannot be replaced. The sensors are
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 sensors is displayed on the
receiving device if it supports Bluetooth
®
Battery
Service.
To increase battery life, the sensors go into standby
mode in thirty minutes if you stop cycling and the
magnets are not passing the sensors.
Frequently Asked Questions
What should I do if...
...the cadence/speed reading is 0 or there is no
cadence/speed reading while cycling?
• Make sure the position and distance of the sensor to
the magnet are appropriate.
• Check that you have activated the cadence/speed
function in the receiving device. For further
information, see the user guidance material of the
receiving device or mobile application.
• Try keeping the receiving device in a bike mount on
the handlebar. This may improve the connection.
• If the 0 reading appears irregularly, this may be due
to temporary electromagnetic interference in your
current surroundings.
• If the 0 reading is constant, the battery may be
empty.
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