Apple Watch Battery Draining suddenly after Software Update

I have the same issue. New UW2 drains 1% every two minutes. iPhone and UW2 software are up to date. Tried unpairing and re-pairing. The watch is literally useless and Apple support cannot find an issue on their end.

Truly unacceptable...

I had the same issue with an UW2. Tried everything. Software is totally up to date on all devices. What worked - seemingly for now - was putting the watch in low power mode for a few hours. I did it overnight. Drain totally stopped. Then I took it out of low or power mode and the battery seems to be operating normally. Hard to say why that would work, but maybe it will work for others.

I am having the same problem with the Apple Watch update 10.4 stalling at 2/3 through. I have tried deleting & starting over but to no avail. I am also having the problem of the battery drain on my watch. I am trying the work around that iTMOM608 suggested but haven’t tried starting back to updating the iOS. 10.4. I hope Apple sees these complaints & does something about them! If anyone finds a solution please post it & let me know.

A few weeks ago I did the unpairing/pairing, removed some apps and notifications and turned off "always on" for the screen. Something worked and I stopped getting the battery drain. I'm not sure exactly what did it, but I'm afraid to put the screen back to "always on", and it really doesn't bother me to not have it always on.

@Kika_235 Are you using the same icloud account on your new phone? I am just curios, becase this is exactly happening to me as well, but for me on iphone 13 pro. I have bought 2 new watches as well to test with them, same happens with all of them. Doesn't hsppen, when the watches are paired to some other phones, we tried. Your example shows that the issue is on the phone somehow and not with the icloud then if you use the same account.

Jeff Donald, I have tried already all of these, even factory reset of my phone and no backup restore,just simply loggin in back to my apple id... and the same issue persisted with 4 different watches. At least in my case the issue is horrible, it's syncing soemthing from my icloud. I have an escalated case with Apple Support to the engineering team, and they responses after several diagnoses and loggin profiles that it's a known issue, they are working on it. But Goood, it has been 1 month ago...

Did someone update to 18 Beta on phone? Afterall I was like maybe they have fixed this on it, but unfortunatelly nothing changed :(

Same issues with me…after updating it to ios 10.5 my battery drains so fast even if i’m not using it..imagine that my battery health is at 100% till now…i’m working from home and barely use my apple watch..before it last for 2 days even if i’m using it but not it stays up to 1 day only..I hope that the new ios 11 can fix the battery issue.

I’ve received a message from apple support to do some tips so that I could fix the battery issue but nothing happens. They told me to first unpair the phone from my watch then restart both the device and watch. After that I pair it again and when I’ve noticed that its still draining my battery so I tried to reset my phone even if I don’t want to do it but in my mind maybe its my phone who has the problem with the connection of my apple watch but in the end its still the same problem. I might wait for the new IOS update and if still nothing happens I will gonna sell my watch/swap it to newer version cause I’ve been using an apple watch series 8 but the saddest part is the battery health is still at 100% cause I work from home for 5months now that’s why I haven’t use my watch often 😔

What issue with the Watch would not involved engineering, except for physical abuse?

I'm going to do rely on what Apple support told me during two calls: it's a known issue and Apple may be working on it.

Same issue, battery draining in a few hours and can't update apple watch software as it is stuck in "preparing". This is so frustrating.

I'm having exactly the same issue draining and stuck in preparing software update

I tried updating mine as well and it was stuck on preparing as well

Same here. Watch losing charge faster than watch will charge. I cannot get my watch to charge to 50% to attempt an update to fix the problem.

Mine had the same issue, I updated my phone last night my apple watch 7 died in 4 hours. I am trying to update the watch and it is stuck in preparing. Soooo frustrating.....

I tried contacting Apple support and they pretended they didn’t understand what I was saying. I guess they didn’t understand English. What happened to the American apple support team?