Hello,
I'm having troubles with my battery for quite some time, but what's fairly new: when I charge my Vivoactive 3 to 100 %, it takes usually around half an hour to reach 90 % (without any activity). Basically, the drop in first minutes is insane, it's not even dropping that fast during an activity right after the charge.
I mean it annoys me for quite some time. First Forerunner 225 became solid dead after 16 months (they refunded the money on the other side)
Vivoactive 3 having serious trables after 2 years exactly (basically the month my warranty went off I've started having troubles with battery sometimes not even being able to last 2 days), got offered to pay a lot and get vivoactive 4.
I was thinking about purchasing fenix 7, but watching how two different models became a piece of junk after 2 years aren't really making me too happy to spend a LOT for Fenix hoping, that it will last at least 3 years or so.