iphone 12 pro max battery health degrading

I got my new 128GB 12 Pro Max with blue silicon case on the 11/13 launch day. In the weeks since I’ve noticed the battery health has already dropped to 98%. I’ve only used public releases of iOS and haven’t installed any iOS beta’s that would have enabled extra logging functions that could have negatively impacted battery life and health. Optimized charging has been enabled the whole time, and it’s only been charged with a USB-A cable and an Apple 5W charger. I don’t see any apps standing out as battery hogs, and I’m using my phone as much as I did my 11 Pro Max. I’m shocked to see the battery health drop below 100% in the first 6 weeks, and at this rate it will be below 90% by summer 2021. Has anyone else noticed their battery health has dropped below 100% on a 12 Pro Max?

iPhone 12 Pro Max, iOS 14

Posted on Jan 3, 2021 10:50 AM

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Posted on Apr 19, 2021 5:51 PM

It has nothing to do with chronological time. It is “80% is normal after 500 full charge cycles”. A full charge cycle is from 0 to 100% (or combinations that add up to 100% such as 20% to 70% twice). And you should never let it go to 0% intentionally; that WILL shorten the capacity of the battery if it happens frequently. Ideally, charge it when it gets to 20%, and charge it overnight, every night, with Optimized charging enabled.

827 replies

May 1, 2021 12:37 AM in response to Dogcow-Moof

Does not matter, as I said did not have battery issue's before. As well they can write anything on that change log, it's still have a crappy battery on this latest iPhone 12 Pro Max.


Also with a car that use fuel does not reflect a lithium battery. I could care less of that. All I know when you paid for a premium device or service you expect quality back and I am a person who does not accept being short changed. Myself and other people on this thread is still having issues about this regardless. So I am only voicing my experience with this latest iPhone and I am currently not happy about it.

May 1, 2021 2:53 AM in response to Dogcow-Moof

Isn't that what I am already doing in the first place? So to safeguard myself already brought this up with Support, visited the apple store in my area, phone and email.


As well what you said its obvious and I already know that and I am only sharing my experience with this crappy battery in this premium iPhone.


Thus why the 14.5 update as you said and I already know they done the recalibration update. But my experience today after that update I was on 98% to just recently after the update I come down to 97% battery health. So I am taking the changelogs it with a grain of salt.

May 11, 2021 1:54 PM in response to Lawrence Finch

I still don’t think Charging overnight is valid and battery health is just a gimmick, it was just done by Apple to make users caution about their battery so they can put a new for Apple to make more money out of it, many users even my cousin have iPhone 11 and it’s an year old and he is still have 100% battery health as he is heavy user and he charges his phone in the morning from 10 to 100%, even my 11 pro max is 1.5 years old and it’s on 93% which will be better with battery recalibration as I always charge in the morning with optimised charging on and it gives me 2 days of normal use on it, so I think charging it in the day is the right way to go.

May 20, 2021 5:47 AM in response to stretch23

My iphone 12 pro i used in since end of nov 2020 and now today 25 May 2021 just abt 6 months, the battery health is 95%.


its 5% drop in abt 6 months!


i started to feel that the battery drained much faster before knowing it is at 95%.


what happen?


please help me. Is the battery already problem or what? Shud i request for battery change?


please help


i used in since end of nov 2020 and now today 25 May 2021 just abt 6 months, the battery health is 95%.


its 5% drop in abt 6 months!


i started to feel that the battery drained much faster before knowing it is at 95%.


what happen?


please help me. Is the battery already problem or what? Shud i request for battery change?


please help

May 20, 2021 6:15 PM in response to stretch23

I’m really upset and the Apple phone techs were rude and one even hung up on me. I’m part of the Apple upgrade program and get a new phone every year. Ever since I started using iPhones with the 4S, my battery has never dropped more than 2-3% in a year, and I constantly keep it on the charger. Maybe this is a MagSafe charger issue.


My 12 Pro Max 512GB is now at 89% and I received it about 2 weeks after launch. My stepfather’s iPhone 6 Plus is also at 89%!!! And nothing is wrong?


Apple won’t replace it under warranty until it drops below 80% which is absurd because you are supposed to have a certain amount of hours (11-12) per day you can use your phone. If it drops to 89% (and it was still 100% up until 2 months ago) then you have 11% less time you can use it daily, so that’s just not right. They should replace these defective pieces of crap on a $1650 phone (plus tax) with a $300 AppleCare with Theft and Loss plan!!!!

May 20, 2021 6:31 PM in response to Dazzlechic

Hello my iphone 12pro 512GB batt health drops to 95% yesterday since end of nov2020.


my way of charging it is - i will charge my phone whenever it reach 70% and charge until 100% and will unplug the cable.


i usually never let the batt drops until 50%.


is charging the phone so frequent causing this batt health to degrade?


the batt also drained faster than when it was 100% batt health.


what should i do?


Pls advise

May 22, 2021 10:24 AM in response to Lawrence Finch

thats what im trying to say i feel my battery is degrading faster then it should, it's at 95% according to ios and 91% according to other sources, in comparison the 11 pro max i traded in had about 99% battery health after a year of use, my dad Xr has 96% after 2 years of use. the battery health of my 12 pro max was 98% just two weeks ago. thats a 3% drop in a two week span according to ios.

May 26, 2021 7:15 AM in response to aldebaran219

"was told by one of the Managers there that 90% battery health was normal for my iPhone and this fall in health was likely to be the use of my iPhone during COVID. "


That is a complete GARBAGE response!! All of us dealt with this pandemic lock down..BUT not all of us was (is) on our phones 24/7 since Nov. when these phones came out.


Personally, my average screen time on my 12 PM is about 3 1/2, 4 hours per week! Even with my XS Max from LAST March - Nov..the height of this lockdown, it was the same usage...yet the battery on that old phone seemed to be just fine.


I have dealt with a few cool reps at the physical store, but I have also dealt with some real unprofessional smug employees that think they have all the power in the world because they are an "Apple employee." Problem with this is...yeah, they have -what they think - is the final say with out $1000+ flawed devices.


Sorry, the reply just angered me, I am sorry. It really is a terrible way to be treated!



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iphone 12 pro max battery health degrading

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