18.23 - Battery drain of 80% overnight

Yes, I did the same, and now my watch is unusable as it drains in less than 24 hours. I have switched everything off to save battery, but it's still draining. What's the point in spending loads of money on a watch and relying on it when they just update and kill it?

Mine 14% in 24 hours, with one run of a half hour. No pulse ox , standard watchface. Only Stryd connected whilst running. Only one ciq datafield (Stryd)

I have the same problem. Battery consumption increased from less than 10%/day to 15% after last update.

The same experience for me, about 70% drain last night.

No issues in previous 3-4 days (this is a new watch).

There are certain circumstances which seem to leave a Bluetooth interaction incomplete or partially open which causes excessive battery consumption.

In my case it was editing some of the watch's settings using the Garmin Connect app.

For others it's the interaction with a Stryd device.

Usually a normal Power Off/Power On of the watch will fix it.