The battery drain problem has been arround since 13.40 version. I made a ticket with garmin support back then and reverted back to the 13.3 version since then. A few days ago I get this email:
"We have identified a possible issue with software version…
Hello,
My vivoactive 3 is also draining the battery. Software version 7.80
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…
I just got this watch a month ago and I noticed my battery starts to drains quicky after 50%. I didn't even use the watch overnight it went from 54% to 19% when I'm sleeping. Can someone please help me? This is ridiculous. I did a soft reset too and that…
My VA3 has battery drain since the last update to 7.50 (about a week ago) and now it won't barely hold a charge for 2 days. Tried to factory reset multiple time and even changing the phone do no good 
In my case, I have touchscreen disabled 99% of the time, so the big battery drain is without it.
Any idea on the reason for this battery drain ? Or how to fix it ?
Some tips are for example here:
I've seen the thread about it keeping GPS on after GPS activity but I think I'm similar but slightly different.
When zwifting I start the watch recording an "indoor cycling" activity, mostly to force it to use my chest strap HR rather than wrist…
