WatchOS 7.5 battery drain

Guys I found the problem! Go to settings and disable the Wi-Fi. It sucks to disable but it works for me.

To stop the battery from quickly draining, do this:

In the Watch App (on your iPhone)

General -> Background App Refresh -> (Turn off "Background App Refresh")

I followed your example, though in a slightly different way disabling a bunch of background app refreshing as well as removing a bunch of apps I do not use. The battery drain has definitely slowed and seems nearly normal. I am not sure which service or app was causing the issue, but I am guessing it must have been an Apple Services that had some type of fix applied in the past update. I also removed my banking app, Audible, my garage door opener app, and a couple of others that I never touched. I am guessing these apps were not the issue rather it was likely an Apple service running in the background that caused the problem. I disabled Sleep, Music, Mail, News, Photos, Shortcuts, and Stocks.

A small update: I changed to my old watch face (Infograph with a lot of complications) this morning and after 2,5 hours I only lost 6% charge. Yesterday I lost 10% within 2 hours - looks a bit better so far. Maybe you should give this a try, too.

Same. Series 6 purchased in December 2020. Used to make it from 6am to 10pm no problem. Ever since 7.5, I get low power warnings at 5pm in the afternoon. The vibration took me by surprise, and I thought I had set it on the charger incorrectly. Apple needs to address this as it has diminished the quality of the product. For now, trying the restart suggestion and turning off background app refresh on a lot of apps.

I spent time on the phone with Apple Support on Friday and they had no idea or really believed it had to do with the update. I told them just look at your community support. So far this is what has helped me. I tried the unpairing and repairing, it helped for a day maybe then back to the same old drain. I have since stopped using the bedtime app, that seems to drain it big time over night and I removed all non apple watch standard apps. I also make sure all apps are closed on not sitting in the dock. Apple wants me to send my watch in for diagnostics, it is obviously the update not the battery. There is no way everyone all of a sudden has bad batteries in their watches. I am thinking about sending mine in so they can see it is NOT my battery.

I believe the issue maybe the update changed something with using the Apple Watch to open phone without facial recognition. Both my wife and I had the super fast battery drain issue and after trying everything suggested, we realized the issue went away when we turned off the "Unlock with Apple Watch" setting in FaceID & Passcode.

iPhone>Settings>Face ID & Passcode>Unlock With Apple Watch

Hope this helps others and Apple addresses the issue.

I noticed this also and pasted earlier. Model: A2093 Ver: 7.5 (18T567). I tried the turn of authenticating with mask on, did nothing. So turned it back on. Rather than do all that app deactivation, I turned off my watch left it for a while as I forgot, turned it back on and it is back to the way it was within 1 or 2 %. As I wear my watch all night I used to walk u with app. 91% when it messed up I was waking up with 73% now back to 90%, always a full charge when going to bed. Go figure!!!!!

Just to chime in, I had this issue since the 7.5 update and also still with 7.6. But what I also had was relief with both releases once I opened the Watch app on my phone after the watch rebooted after the update.

I don't know if I changed anything in particular (I am pretty sure I did not) but it may be just the moment when the phone initially connected to the watch again after the reboot.

I still don't see any other "scheme" here whether the battery drain persists or is gone forever.

I noticed this always directly right after the update (also with 7.6) and it was gone after the procedure described above.

Today I grabbed the fully charged watch from the dock and now after 13,5h I still have 48% which is ok. I have display set to be always-on, LTE and Wifi turned on also every other setting that is set by default. I am talking to Siri quite often and also open the weather app etc. I am not doing workouts or whatsoever. Reminders to stand up are being silenced every time ;-) and also hand-washing events occur from time to time (if they work...).

Today Apple released iOS 14.7.1 but I don't know if watchOS also got an update but I doubt it.

I had the same issue. I fixed it after unpairing and restoring the watch. Now it is back to normal.

Still good on day 3 after powering off and on the watches. Charge is over 50% after 12 hours just like before the OS 7.5 update. Looks like it did the trick.

I found my issue:

my back glass is broken..

some functions work abnormal

I did a full restore on the watch last week and so far the battery life is back to normal. Hopefully it lasts.

I called Apple yesterday and they are sending a request to engineering to have them look at this. After being told it was my watch and it had nothing to do with the update, I told them to look at the apple community support page, ton of people are having this issue. The person I originally spoke to said it couldn't be the update because she had the 6 and the update didn’t do anything to hers. This was technical support advisor telling me this, thats when I asked for a supervisor.