What battery does the Speed and Cadence Sensor use? The BioLogic Store Customer Service Team November 07, 2016 08:55 Updated Follow It uses CR-2032 battery. Related articles Can I use the sensor in rain? I have installed the Speed Cadence Sensor on my bike and it is successfully paired with my phone but I cannot get any readings. Can you please help? Comments 0 comments Article is closed for comments.