@thanasis I’d be careful with the official specs, tbh. If you were in the sun the whole time at the right angle also the whole time, and not using the map screen much, then 85 hours becomes a useful reference.
So looking at 60 hours instead, 2 hours = 3.33%, which is still much less than the 6% you report.
Where I notice the difference is not in GPS activities, that is still very good - it’s idle battery usage. I was at 99% last time I charged, and 75 hours later I sit at 80%.
During this time, zero sun exposure to the watch, I’ve: tracked GPS for 20 minutes, and used a 10-minute activity with regular vibrations.
That gives roughly 6%/day of idle usage, consistent with others’ findings = 16-17 days in daily mode. Not 30 days.
BTW the 60 days is with 3 hours of max solar charging per day, which is unrealistic for most in the northern hemisphere right now.