Watch battery draining when powered off

what does your 'simple question' have to do with the op problem anyway? Im pretty sure turning the watch off at night is not the one that causing the battery drain issue here as many (including me) also having the same issue especially after the Watchos 9.2 update

For op, im also experiencing the issue and have done everything i've found online, from unpair and repair from backup, unpair and repair as new watch, hard reboot, deleting third party apps, turning off every possible setting, but nothing changed. the most logical thing to do now is waiting for the next software update and hope they will fix this problem.

To understand Apple Watch performance and its relation to your battery, see:

Apple Watch - Battery - Apple

Apple Watch Battery and Performance - Apple Support

“Battery life” is the amount of time your device runs before it needs to be recharged. “Battery lifespan” is the amount of time your battery lasts until it needs to be replaced. Maximize both and you’ll get the most out of your Apple devices, no matter which ones you own. See the "Tips for Apple Watch" section in:

Batteries - Maximizing Performance - Apple

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.

For repair & service:

watch Repair - Official Apple Support

watch Service Pricing - Apple Support

Simple question: Why are you turning it off at night as opposed to putting it on its charger, with Optimized Battery Charging turned on and let the watch do what it's designed to do, which is manage battery charging and present you with a watch charged and ready to go for a days use?

I'm not sure why you feel you need to chime in, but my question was a good question. Users like myself who have been here for more than a decade and who have owned just about every Apple Watch model made, put our watches on our chargers at night while we sleep. The watch has circuitry built in to manage charging. And we wake up to a watch fully charged and ready for a days use.

Again, not that I owe you anything, but I asked a logical question and I honestly don't need to justify it to you at all.

If you and the OP are having issues with the battery have you checked the Battery Health of your battery? On Apple Watch, tap your digital crown . Settings > Battery > Battery Health. If it is near 80% or below, the battery could simply be failing at this point.

Waiting for Apple to fix an issue which is not universal will be disappointing for you. On WatchOS 9.2, my battery is not losing power at all and since my watch is a new Ultra, Battery health is 100%.

Cheers

There was NOTHING condescending in my question.