Hi, I re-launch this old thread since I can't reply there.
There is some reason why the cadence sensor is not listed in the activity or it is my mistake?
I have seen other questions, none with a concrete answer. I also found this article but I believe it is outdated because my Dual HRM and Speed Sensor 2 do show up correctly in my activity.
https://support.garmin.com/en-US/?faq=7XFOHzhrob9EcTuWVsUrcAHRM Dual and SPD2 are displayed on the activity with the battery level information but not the CAD sensor.
Also looking at the .fit file that generates the cycling activity I see that the CAD sensor information is there, even with its battery level. This makes me wonder again what the reason is for not listing it with the other sensors.
It would be great if would publish in Connect the information of the battery voltages at the end of the activity, in fact it is also in the .fit file but it is not displayed.
Thanks!