Does 16.3 have new battery re-calibration capabilities?

[newfoundglory]

So I sometimes, maybe once every few months, run the iphone battery down to 1% until it shuts down itself or loses power.

I do this yesterday, 9am was about 20% and 90 mins later about 10% and then the iPhone takes another 8 or 9 hours before it finally shuts down about 1830. During that time, it goes close to 1% only to recover to well over 10%.

It also displayed multiple 20% low battery warnings.

I have never seen this behaviour, when the battery level constantly changes, and goes up at low levels?

 

[Paddle1]

What phone is this?

 

[BugeyeSTI]

What's the battery health reading?

 

[newfoundglory]

iPhone X, currently 87%

 

[BugeyeSTI]

iPhone X, currently 87%

Is it the original battery or a 3rd party replacement?

 

[guesswho183]

Yor battery is not in perfect shape, that is reason. Happens to with iPhone X also in colder weather, battery health 81%. Btw. iMazing read batt capacity as 77% somehow so I guess apple readings ussing some average values. Real battery strenght is shown during winter days.

 

[Helmsley]

So I sometimes, maybe once every few months, run the iphone battery down to 1% until it shuts down itself or loses power.

There's absolutely no reason to do that intentionally. It can cause unnecessary wear and in some cases, permanent battery damage.

 

[Bazza1]

Don't know about re-calibration, but I do know that since 16.3 (and giving it some days to get it's 'ducks in a row', thru several full re-boots and not adding / removing any apps and how they're setup), the battery of my 12 Mini is on it's last gasps significantly sooner than it was on previous OS versions.

 

[HouseLannister]

There's absolutely no reason to do that intentionally. It can cause unnecessary wear and in some cases, permanent battery damage.

Not only is it damaging the battery, but if the OS was doing something when it died unexpectantly then there may be data loss/corruption, which may explain the percentage going up and down and the repeated errors. Recommend a full reset and if the problem persists, get a new battery. Remember: battery memory is not a thing anymore (even NiMH batteries don't -- you'd have to go all the way back to a NiCad battery to ever worry about doing full discharges). There is zero reason to 100% discharge a battery -- unless you are a tech journalist reviewing the device, then I want to know exactly how long each phone you review lasts.