I continue to track battery life with the same settings I used above. This time I managed to get 15 days with 19.75 hours of GPS activities (running and cycling) while the battery went down from 100% to 8%.
During this period I noticed that with the 6.5.9 Android app that had BT connectivity issues the battery drain without activities was less than before. I managed about 3.75%/day (which translates into over 26 days without activities!!). Once version 6.6.3 of the app fixed these issues, usage was probably back to my normal of about 4.7%/day. I guess flight mode is an effective way to save battery life…
I also had some Android updates (Pixel 8 ) so it’s hard to tell what changed.
Anyway, I’m still quite happy with the V2 battery life. Charging once every two weeks roughly is great. It mainly depends on the activity load (during this cycle I was sick for a few days so my average daily GPS usage was low in the first week).