Battery Replacement in Polar product
Polar recommends that an authorized Polar service be used for battery change. If you wish to change the battery yourself, please check that you have a model for which you can do this so as not to risk damage to the training computer.
Battery empty in the Polar Transmitter
The average battery lifetime of Polar WearLink31 and WearLink W.I.N.D. Transmitters is 2 years and of T31, T31C and T61 Transmitters approx. 2500 hours of use. We recommend that the transmitter battery be checked by a Polar Service Center when the battery of the receiver is replaced.