iPhone X battery life issues

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Level 4

1,388 points

iPhone X battery life issues

My iPhone X is still under monthly AppleCare+ warranty, and the battery health is 96% (was 97% last week).

At night, when I'm mostly sleeping, my battery drains rapidly and I don't know why. At most I might reach over every couple of hours and see if there are new emails.

The battery settings don't show abnormal battery use by any apps. The most over a typical two hour period might be Siri listening. The screen is set to automatically turn off after a minute.

I've read every single one of Apple support articles on battery life.

This morning it drained from 80% to dead overnight. When I charged it said "This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. Performance management has been applied to help prevent this from happening again."

I connected with Apple Support and they did a remote diagnostic and claim everything is normal. They also recommended turning off that performance management setting!

But they really had no suggestions about what to do or look for.

I don't remember it doing this until recently.

Do I just need to buy a wireless charger and put it next to my bed so it keeps charging all night?

Any thoughts?

Thanks,

doug

iPhone X, iOS 15

Posted on Oct 7, 2021 5:27 PM

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Answer 1

Oct 7, 2021 5:35 PM in response to Doug Lerner2

Go to Settings > Battery and look at what's using the most charge. Make adjustments at necessary.

But you should plug your phone in to charge when you go to sleep at night and leave it plugged in all night EVERY night. You won't lose any charge and your phone will be fully charged for a days use. It's not possible to overcharge iPhone batteries AND if you backup to iCloud, while you sleep, your phone will backup every night so you won't lose data should something go wrong. Make sure in Battery Settings you have Optimized Battery Charging turned on.

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Answer 2

Oct 7, 2021 6:44 PM in response to Doug Lerner2

No, iCloud backup only happens when the phone is plugged in to charge, connected to Wifi and the screen is locked. And that doesn't happen immediately.

You can get a wireless charger or leave it plugged in. Either will work just fine. But definitely leave it charging while you sleep at night.

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Answer 3

Doug Lerner2 Author

Level 4

1,388 points

Oct 7, 2021 6:36 PM in response to lobsterghost1

As mentioned, nothing seems to be eating up charge. I can check the hour-by-hour battery usage while I'm sleeping and all that shows up is something like Siri, with a "-" indicating not even a percentage used. That's why I'm stumped.

Also, while I do have Optimized Battery Charging turned on, that's just for overall health life of the battery, right? Not daily battery drain, I believe.

I think iCloud backup goes on all the time, doesn't it?

Another odd point I mentioned is I never noticed this issue until relatively recently. But, as I said, I can't find any apps to blame in the battery settings.

Should I just get a wireless charger and leave my iPhone on it next to my bed to get around the problem?

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Answer 4

Doug Lerner2 Author

Level 4

1,388 points

Oct 7, 2021 7:19 PM in response to lobsterghost1

Oh, that. It does get backed up daily, during the day or evening before I go to sleep. Backups are up to date.

Still, it remains a mystery why the battery is draining so much overnight.

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Answer 5

Doug Lerner2 Author

Level 4

1,388 points

Oct 7, 2021 8:52 PM in response to lobsterghost1

That's the mystery. Nothing unusual is showing up in Settings > Battery while I'm sleeping. Except for Siri, which is listening I guess. But even that doesn't show any percentage. And I hear that turning Siri listening off doesn't really save battery.

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Answer 6

Oct 7, 2021 7:22 PM in response to Doug Lerner2

I can't help you with that. Whatever is using your battery at night, should be shown in Battery when you look it up in Settings.

Charging while you sleep will prevent that from happening.

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iPhone X battery life issues

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