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

Jan 30, 2020 1:10 AM in response to hw1201

But will it really have an effect (in hardware terms) on the Watch battery? Or does it remain only a software-relarted issue?


I have signed out of iCloud now (another workaround mentioned somewhere), and will check again what happens in a couple of hours. If this does not make any difference, I wilI sign into iCloud again, wait a couple of days and if the problem still persists I will restore my watch as new and pair it with another iPhone that I have, fot the final test. It seems there is a long way go until we discover whether the problem is software related or if the battery itself is faulty.

Feb 21, 2020 11:52 AM in response to Guila

I would strongly recommend that you check into the logs your watch produces (see General>Diagnostic Logs inside the Watch app on your phone). Look through some of them, see if you spot something that says “TrustedPeersHelper”. If yes, there’s a solution! My Apple Watch is completely fixed after I followed the steps in my post. Back to 60% after 14 hours of use!

Oct 22, 2019 8:54 PM in response to boatjames

I had the same thing happen to me on my Series 2 watch yesterday - it was fully charged at 8am and completely drained before 4pm on a sedentary work day. Prior to this, it used to last all day even with at least one 1-1.5hr workout at the end of the day.

Powering off my iPhone and watch, then powering them on again as suggested unfortunately did not help in my case.

Oct 23, 2019 3:08 AM in response to demuire

I have the iPhone XS Max, and an Apple Watch Series 2. The day after I updated to WatchOS 5.3.2, my battery tanked. I charged it overnight, put it on at 7:45am, and it was dead by 1pm!

After reading this thread I turned it off, turned off my phone, restarted both, then removed the Now Playing complication- which somehow made it worse, it was completely dead by 11am.

Hoping there’s a fix soon!

Oct 30, 2019 5:21 AM in response to Ian2801

Same here! Every time after I go for a run it gets way worse! I was also having an issue where my run would pause and unpause extremely frequently about 20 minutes into my run. I just updated to 6.2 last night and I’m really hoping that fixes everything! So far today it seems like it has definitely helped and things are back to normal but I won’t know for sure until after I run this evening

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Apple Watch sudden battery drain?

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