A few weeks ago my Vivoactive 5 started to drain the battery in under 3 days, even with no activity. I've had it around 18 months and prior to this a full charge would easily last 10 days, activity dependent. It is currently showing software version 13.19.
I see several older threads with a similar problem, albeit mine only seems to have started quite recently. There are suggestions to fully drain/fully charge/restart which I've done several times, plus I've tried resetting the device, both with and without deleting data. So far nothing has worked and I still see a battery drain of 30-40% per day. Anyone seeing similar or have other suggestions?