Watch OS - battery life

If the battery drains too fast after an update, see all the replies to:

Battery Drain since watchos 7.4 - Apple Community

WatchOS 7.5 battery drain - Apple Community

FWIW, in some cases, unpairing the watch, completely erasing it, then pairing and restoring the backup will resolve the battery draining issue after an update. (Simply unpairing and pairing again may not work.)

Unpair and erase your Apple Watch - Apple Support

Also, some people have found that simply waiting a few days after an update resolves the battery draining problem.

Updated to iOS 8.3 on my watch last night at 830pm. Was charged at 100% at 10pm and not even 12 hours later it’s at 23% and I’ve don’t nothing on it today. I can typically wear it all night, take 30 min workout during day and wear it until 9pm and it then will be 25-30% battery.

sure hope apple gets a fix for this. What’s the point of my watch if it’s dead in less than 12 hours