ios9 upgrade causing battery drain on apple watch

The battery monitor isn't the issue.

After every IOS update, some people experience issues like this - I have no idea why it affects some and not others. There may be misbehaving apps (Facebook, I mean you), but that's not always the cause.

A full backup and restore very often helps. Even better, do a full backup, restore as a new phone, then restore the recent backup.

I just power off the watch and then power on and this solved the issue, I hope that this help you all.

same, the watch battery only last for around 6hrs. 😟

Ok, updated to watchos2 and all is fine now! Been wearing for 6 hours so far today and battery is down only 5%.

After performing a hard-reset on both the iPhone and the watch, the issue was resolved for me. Then, after the upgrade to WatchOS2, all is still working well.

I had tried these steps when I ran into this, it didn't help. I did it a 2nd time, and instead of restoring I set it up as a 'new watch'. My battery life went back to normal afterwards. No idea why, but that's what worked for me...

After upgrading to Watch OS 2, my battery life is now about 8 hours. I was getting close to 36 before.

I erased everything and set the watch up as a new device with no apps installed. Still the same problem.

Something is very wrong, and the watch is fairly useless if it can't last through a full day of light usage.

I have iOS 9 on a 5S.

Contact Apple Support:

https://www.apple.com/support/watch/contact/

And/or let Apple know about the issue via the feedback form:

https://www.apple.com/feedback/watch.html

It would be worth your restoring the phone. A number of people have reported, in various nplaces, that this has made a difference.

If you decide to do so, follow this porcess:

1. Unpair the watch - this creates a backup of the watch data on the phone

2. Connect the phone to iTunes and do a full, encrypted backup. Encrypting the backup ensures you keep health/activity data and also backs up passwords

3. Restore the phone as a new phone

4. Once restored and functional, connect to iTunes and do File, Devices, Restore from backup and use the backup you made a step 2

5. Re-pair the Watch and, if you want to, accept the option to restore a backup from the phone

It's a long process and incovenient, but I think worth it to get battery life back to somewhere near where it should be. It is worth bearing in mind that there might be apps that play badly with IOS9/WatchOS2, as mentioned elsewhere in this thread

I had the same problem, and although I didn't figure out the problem, my battery has gone back to normal.

I opened each app on my iPhone and my Apple Watch, including each of my glances.

I was wondering if it had something to do with them not syncing together correctly and it has worked the past 2 days.

It could've been something with one of my apps like Dark Sky or Dream Days, not linking together with my iPhone properly.

I'm running iOS 9.0 and Watch OS2 and just upgraded to iOS 9.01 yesterday and performance is still working the same.

I use 50% battery per day on the Watch, so I charge every other day.

Let us know if you have any progress.

I took JonathanUK's advice up top and contacted Apple via online chat. After being routed through a few techs, I got one who told me to upgrade my phone (5S) to iOS 9.01, which I did. It didn't seem to fix the problem. Last night, even after a supplemental 30 minutes of charge, the watch died at 9PM.

BUT... this morning, after charging the phone overnight as usual, battery life is back to normal. I'm down 25% after eight hours, and that's after running diagnostics with Apple on the phone (I had a call scheduled for today).

They said everything looked good, but that the stock app (which I never use) had reported itself crashed a couple of times. That could be nothing, or it could be significant.

So... still a mystery, but my watch seems to be fixed. I'll keep monitoring.

I just upgraded to the watch 2 update and I'm running out of power around 3pm. Whazzup?

Same issue for me. Used to get through the day with 35%-40% power left and now it drains in about 8 hrs or so. What the....? Unpaired and re-paired the watch twice, no improvement. I guess the next step is to do a reset of the phone, darn it.