The strangest thing (more about battery)

Since I'm on 7.1 I entered the second battery charge cycle 2 days ago.

Cycle 1:
Average daily consumption 12.8% - between 0.35 and 1.8% per hour. No consistency in drain, all over the place. No GPS usage, just SW mode.

Cycle 2, well in day 2 (2.5 days)
Hourly consumption in SW mode consistently 0.225%

I mean, what is going on here? How is this even possible? I just gave the order to my Garmin dealer to ask approval to replace my watch (for the second time). But if this consumption would be representative for the whole expected period I'd better stick to this one I guess with a predicted up time of 18 days!
  • F5+ST Still on the same cycle, battery now discharging at about 0.27% per hour, highest discharge rate was 0,42% during a stairs climbing exercise (21 flights), twice this week so no GPS usage. Estimated running time this cycle is 15.2 days. I'm at day 5 now.

    If this was consistent behaviour I would be thrilled. But the previous charging cycle was all over the place with loosing 18% during a 7 hour period while sleeping...