Apple Watch sudden battery drain?

Is there something strange happening with WatchOS today? I have a Series 2 Nike Edition running 5.3.2 and a Series 5 Nike Edition running 6.0.1. Both has normal "all day battery" life prior to today. However, today both have drained battery much quicker (the Series 2 drained almost completely in half a day, the Series 5 now down to 7% after 10 hours). What would cause this sudden battery drain? No change in usage.

Apple Watch

Posted on Oct 14, 2019 1:29 AM

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Posted on Feb 23, 2020 9:54 AM

This is a follow up to my previous posts. I found that my iPhone and Apple Watch were still draining faster than they should.


Reviewing the diagnostic logs from my iPhone and watch, I found TrustedPeersHelper still taking a lot of CPU on both devices. My mac has been fine, but something still wasn't right with my other devices.


So, this time I ran this terminal command from my mac: tpctl reset


I was then forced to login to iCloud on my mac and iPhone, but ever since my watch and iPhone are not running hot. Yesterday, I wore my watch from 7 am to midnight, and I still had 60% remaining on my watch, and 70% on my iPhone.


The "tpctl reset" resolved all of my battery issues!


If you don't have a mac, I'd recommend calling Apple or going to an Apple store. They must have a way to do the equivalent of "tpctl reset" on your behalf from their side. I hope this helps everyone.

206 replies

Oct 16, 2019 2:37 AM in response to boatjames

I have at least partially fixed the problem, although the battery drain is definitely still much higher than previously.


My phone battery also was draining very quickly and the battery app told me that the Music app had used 93% of my battery (all background), I hadn't even listened to music that day! Restarting didn't help, so did a hard restart and that fixed the phone battery, and today my watch has lasted a full day. It's almost flat though where previously it would probably be closer to 50% by this time of the day. So still high, but at least it's not dying before lunch time...

Nov 6, 2019 10:33 AM in response to anajarian

I'm finding it worse since the update. Even had the the watch completely reset on its own at one point. Repairing and setting up as a new watch has the battery dying around the 16 hour mark and if I have a workout it's even faster.


I shouldn't have to go disable all the advertised functionality of the watch just to get the "All Day" (18hr) use from the watch. Very disappointed.

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Apple Watch sudden battery drain?

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