iPhone Battery Health at 83% - When do I replace it?

My phone battery is 83% do I need to replace


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iPhone 11 Pro Max, iOS 16

Posted on May 5, 2023 11:20 AM

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Posted on May 5, 2023 5:44 PM

It's getting close, you will want to replace it withing the next few months.


Batteries degrade over time with usage due to chemical aging, that's just how they work.

You can expect about a 1% drop per month with average use on an iPhone.

Apple recommends replacing it when it reaches 80%. To check your battery health, go to Settings > Battery > Battery Health.


iPhone Battery Replacement.

iPhone Battery Repair & Replacement - Apple Support


About Lithium Ion Batteries

iPhone Battery and Performance - Apple Support (IN)



69 replies

Aug 5, 2024 5:19 PM in response to iwmp

iwmp wrote:

I've always wondered why this is the case; why wouldn't apple want to replace the battery over 80%? Surely if the customer doesn't find it lasts long enough especially on smaller models like the 12 mini or SE.. And it is extra business for them, no?

Probably because replacing a battery that didn't really need replacing wouldn't end in a good customer experience. It probably wouldn't solve whatever problem the customer thinks they have (lots of people think they have a battery problem when they don't). It also probably would be cost-effective. I suspect Apple doesn't make a lot of money on replacing batteries between the cost of the battery, the labor, and the disposition of the used battery.


Apple will replace a battery that has more than 80% capacity if diagnostics show that there is something else wrong with the battery. I had one replaced at about 83%. The phone was shutting down suddenly. Apple ran diagnostics and decided the solution was a new battery.


But, as Bob said, only Apple would really be able to answer that.

Dec 11, 2023 2:11 PM in response to gle

gle wrote:

I've been an Apple fan since '90, doing Star Trek sound FX on a Mac SE30. But... my iPhone battery went to 83% after one year. now almost a couple years later it's still at 83% although it requires charging 2-3 times day. Apple won't let you replace battery with an Apple battery until 80%, so appears to me that Apple sticks it above that so you CAN'T get a new battery and will buy a new phone. Bought over 20 macs and like a dozen phones and iPads over the years but getting not happy about this...

You can ask Apple to run diagnostics on the battery. The tests they run are more accurate than the information you see on the phone. My battery was at 81% when I had it replaced. Of course, I was also seeing sudden shutdowns.

Jul 2, 2024 7:56 PM in response to gle

i have the same issue: my "battery health" has read 81% for at least the last nine months. (that is when i started checking it, because that is when my phone started not holding a charge for a full day.) my phone won't show me the "cycle count".


the other day, i finally researched and bought the "coconutbattery" app, and ran a test on my phone through my macbook:


battery health = 77%

cycle count = 699

(my battery is rated good for 500)


to be fair, i haven't taken the phone in and asked for a new battery: maybe the tech would take one look, and pop a new one in right away.


but it would be nice to have an official "sub 80%" reading from the phone, so i know that i won't get denied if i take it in.


at the very least, the metrics apple is using to calc "battery health" on this phone are not working, and at worst, it is very easy to get ****** and paranoid.


and it is not a "percentage number" issue: my phone is dying at an irritating rate: i will often find it dead in my pocket, at the end of my work day, when it is supposed to be sounding the alarm to remind me to go home.


i work in construction, and my phone is currently my only easy access to a clock.


so it's a pain in the ***.


not really an "81%: still ok" situation.

Sep 12, 2024 6:01 PM in response to anh9000

Your battery is fine, nothing to worry about. 91% is great for a now two year old battery. Don’t spend time fretting about how you use your iPhone or what its battery health is. ALL batteries wear out eventually, fact of life. iPhones are engineered to get the most performance possible for their batteries. My iPhone 13 battery health is at 90% after three years. Don't worry, be happy.

Dec 30, 2024 12:15 AM in response to deckerTA

How many cycles it has?

There is no need to replace battery if you are ok with it. Batteries stabilize around 80% health mark so if all is good it won't go down much. My wife still uses Iphone 8 with 78% battery and no complaints just needs charger more often but it is fully usable and no much difference how it was when new. Of course iOS warns that battery should be replaced and that is all.

Dec 11, 2023 1:55 PM in response to Wadalsamani

I've been an Apple fan since '90, doing Star Trek sound FX on a Mac SE30. But... my iPhone battery went to 83% after one year. now almost a couple years later it's still at 83% although it requires charging 2-3 times day. Apple won't let you replace battery with an Apple battery until 80%, so appears to me that Apple sticks it above that so you CAN'T get a new battery and will buy a new phone. Bought over 20 macs and like a dozen phones and iPads over the years but getting not happy about this...

Aug 5, 2024 6:07 PM in response to Shanny620

If you have a 12 $400 to go up 1 generation which is still a couple years old seems like a waste. Just note the bullet and trade in your 12 in September or October when the new iPhone comes out and you’ll be set for several years after that. $400 for an old iPhone and another $100 soon after for a battery when you can pay $1000 and get a brand new phone issue free that’ll last you several years

Oct 23, 2024 5:05 PM in response to Michial820

Michial820 wrote:

You can’t replace iPhone batteries, only Apple can do that with their Apple Certified Refurbished service. All you can do is buy another iPhone in excellent condition like the iPhone 11 Pro Max for $400 from Backmarket

In addition, as Krupp pointed out, to it being possible for the end user to replace their own battery, Apple also does it in store for, in the U.S. about $80, much cheaper than buying a whole other phone.

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iPhone Battery Health at 83% - When do I replace it?

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