If you use the app once per month it will tell you the state of all batteries and you can replace the CR2032 batteries (projected for 200 hrs use) in the safety of your own workshop and then recycle them in the correct recycling bin.
But I fully agree that there is scope for them to modify the shifters so that they use a rechargeable (and recyclable at end of life) battery.
Nov. 8, 2020, 6:05 p.m. - AndrewR
If you use the app once per month it will tell you the state of all batteries and you can replace the CR2032 batteries (projected for 200 hrs use) in the safety of your own workshop and then recycle them in the correct recycling bin. But I fully agree that there is scope for them to modify the shifters so that they use a rechargeable (and recyclable at end of life) battery.