Apple Watch Battery Life Reduced?

Rod


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It seems like every year or more frequently, there are multiple online reports that the latest iOS/iPadOS/AWOS upgrade or update has reduced the battery life of everything from MacBooks to Apple Watches, sometimes drastically.
In the case of watchOS 10 there was a claim that a watch previously lasting 24+ hrs on one charge was reduced to 4 hrs. That's pretty drastic, I tend to take these seemingly outrageous claims with a grain of salt while admitting there is probably some fire where there is so much smoke.

I and most people I know have been spared these extreme examples and the rest I tend to put down to expected increases in CPU activity related to app updates, syncing and other unmentioned circumstances. Until now:

After the recent iOS 17.2 and corresponding watchOS 10.2 update my watch battery life dropped by about ≅40%. Charging to 100% in the morning after wearing the watch o/night as usual I found my watch to be at around 10% on waking, rather than the usual 30-40%.

Of course I turned to the Web for posts about similar experiences. This being the source of my reference above to the, "reduced to 4 hrs" example but this was about the watchOS 10.0 upgrade not the recent 10.2 update. Still, I read a number of these posts on various forums, many advising complete resets and re-pairing of the watch and so on, but one did catch my eye. This was from one user who claimed to have found the answer. He said turning the watch off and on 3 times fixed it!

I was dubious, I mean how could that fix anything I thought?
Still, I was reminded of a quotation by Herbert Spencer, "There is a principal which is a bar against all information, which is proof against all arguments and which cannot fail to keep a man in everlasting ignorance. That principal is contempt prior to investigation."

So, as this was a pretty simple exercise I thought, what the heck? I turned the watch off and on twice then on the third turn off I simply put it on the little Apple "puck" charger to wake it, it needed a charge anyway. I then wore it o/night as usual, this morning it was at 76% but as per my routine I put it on the charger. By around 0830 it was 100% charged so I put it on and now at 1056 it's at 99%. Obviously that doesn't prove anything but it's more in line with what I'd expect. The real test will be tomorrow morning so I'll update this post then but I have to say it bodes well.

If anyone has a scientifically based theory on why this method might work I'd love to hear it.
 
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Rod

Rod


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Well, just to follow up; sadly the watch no longer lasts 24 hrs without a charge so I have abandoned my sleep monitoring o/night for now and simply put the watch on charge along with my iPhone.
Next year I will probably upgrade it, in the mean time it works all day even with heavy use so, I'm sure I'll get another year out of it.
 
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Interesting method. Love the quote - so true. I have maybe once or twice worn my watch all night. I found it actually woke me up just being there and the info didn't really tell me anything I didn't already know. Also all my watches have caused a red irritation on my wrist where the back sensors touch my arm. Taking it off at night helps my wrist recover.

Lisa
 

Raz0rEdge

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My Apple Watches are used during the day and I put it for charge over night. I gauge how well I slept during the night by how well I feel the next morning. I don't need a device to tell me that I turned around in my sleep a dozen times. 😃

It is very natural for the devices to perform one way on launch and then different after updates and so on. Beyond just the natural decaying of battery performance, going from the "Rise to wake" to "always on" screen definitely had an impact on the battery life I'm sure. That transition didn't happen purely in software, but if it had, the battery life impact would have been dramatically felt by users/owners.

Generally, I see all batteries as the consumable portion, and the degradation is just a normal thing for me. I've gotten to a point now where I upgrade devices when they are no longer able to hold a charge long enough to be useful to me. For example, my last iPhone upgrade was when I'd go from a full 100% charge in the morning to about 75% in about 30 mins of use and dwindling fast from there..
 
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Rod

Rod


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Well I've never had any skin problems with my watch but wearing the watch o/night was an interesting exercise for a while to get a base line for how soundly I slept but now, like Razor edge, I can pretty easily judge that by how I feel on waking.
I have the SE2 so no Always On Display but after 16 hrs I still have around 30-40% charge so really not a problem.
 

Raz0rEdge

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My AW 7th gen was 100% when and has been in use throughout the day so far and at 10:36 PM EST, I'm at 41%. So I'm getting essentially a full days usage out of it. But, if I wear it overnight, it'll be down to 10% or less in the next 6-8 hours.

I did use a fitbit for sleep very briefly, since it lacks a lot of useful sensors, they track sleep quality based on motion which isn't accurate for those that tend to move around a lot in bed. Based on its analysis I was getting miserable sleep while I was actually very rested each morning and the tossing and turning is just how I sleep..
 

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