iphone 12 pro max battery health degrading

7 months now and this is where mine dropped to. It was 95% a few days ago and 96% the other week. I was against having to purchase a new phone (I had the iPhone 8) but because of it slowing down, I got the 12 pro as a birthday gift to myself. Apple “service products under 80% capacity, as that is the expected lifetime for a lithium age battery.” And then gave me an article https://support.apple.com/kb/HT201264

I then asked the expected lifetime since mine was only 7 months old and was suggested to use low power mode or to charge my phone throughout the day…. At this rate, Apple will be losing their customers.

One thing people do not realise when charging their phones, is that it should not heat up very warm. I use my 20 watt charger that came with my iPad Pro, and the one thing i noticed, especially with my case is that the phone can heat up pretty quickly. This usually occurs when the phone is between 1-80, as this is where your iPhone will utilise its fast charging (go to the website for more information on how rapid and trickle charge work). One thing i like to keep in mind is, when using high wattage chargers is to:

1. Remove the phone from any case you have.
2. Turn on aeroplane mode when charging
3. Set an automation that can enable things such as turning on low power mode when the battery goes below a set percentage of your preference.
4. Use a fully black wallpaper (only for OLED screens such as iPhone X and up) to save battery, and do not use live wallpapers.
5. Prevent from using the phone from direct sun exposure for a very long time.
6. Avoid playing battery intensive games in high battery percentages (this can cause severe wear to the processor as well as the battery)

Those about all the tips I use on a daily basis to allow my Pro Max to stay at 100%, even after 4 months. More tips are available on this website:

https://www.apple.com/au/batteries/maximizing-performance/

The bottom line is when your phone is nearing one year old, take it in to an Apple Store and see if they believe the battery is worthy of being replaced under warranty.

• If it is, it will be.
• If it isn't, they won't.

That is the only action you can take.

We're all just Apple users here, so we can't change anything, and Apple engineering doesn't read these forums.

If you feel compelled to complain, you can do so here:

Feedback - iPhone - Apple

Onthejazz wrote:

do apple even check there own forums

No, these are user-to-user forums hosted by Apple. If you want to provide feedback to Apple:

• https://apple.com/feedback

Apple’s formal support can be reached several ways:

• Click on “Get Support” at the top of this page
• Go to https://getsupport.apple.com

Note that both of the above have options to receive a callback or chat

• Install the Apple Support app on your iPhone or iPad
• Call Apple Support; the phone numbers are in this link→Contact Apple for support and service - Apple Support
• Make a Genius Bar appointment at an Apple Store→Genius Bar Reservation and Apple Support Options - Apple
• Find an Apple store or Apple partner service provider→https://apple.com/retail
• DM @AppleSupport on Twitter

Samuel Maffei wrote:

Me too. Bought my iPhone 12 Pro at launch and it's already down to 89% capacity. That seems like a lot of drop considering the phone is not even 9 months old yet. I expect around 10% drop around the 1 year mark. At this rate, I'll be below 85% by the one year anniversary.

Around 1% per month is normal, yours is a little low but not low enough to be out of the ordinary.

• iPhone Battery and Performance - Apple Support
• Batteries - Why Lithium-ion? - Apple

I purchased my iPhone 12 Pro Max 256 in December 2020 and now I just noticed battery health is at 99%, already dropped 1% just in a month of use. I don’t even charge it that often and I don’t use it when it’s at 20%. I had iPhone XS Max before and almost 10 months of use then it dropped to 99%. Should I be considered about this if anybody knows?

Yep same. Got it on release day and 3m later it’s down to 99%. Get a iPhone every year and this is my 1st max/plus phone. Haven’t changed the way I use it or charge it.

other than I wireless charge the 12 but didn’t do that with my 11.

so it’s either something with wireless charging it or it’s a software issue. As when I bought the 12 pro max I sent my old iPhone X for a new battery. Just asked my daughter and that’s down to 97%.

so 2 brand new batteries and 1 brand new phone and they have dropped.

Mine still at 100% after 2.5 months. I have Zerolemon battery case on day 1, which I will charge-at-will to keep the phone always 85-100% state-of-charge (SoC). Most of the time, phone is between 98% - 100% SoC.

iPhone 12 Pro Max 128GB

There is no benefit to shutting it down when charging it. And it defeats battery optimization and automatic backup. There is also no benefit to letting it run down to any specific value. Charge it when convenient. But the best practice is to turn on Optimized Battery Charging, then charge the phone overnight, every night. And also turn on Automatic Backups, so you will have a current backup every day. Only charge during the day if it doesn’t look like it will make it through the day. This way managing the state of charge won’t rule your life. This is how I use my phone. It’s now over 2 years old, and the battery capacity is 95%.

That’s the short answer. Here is the long answer→When to charge your iPhone or iPad - Apple Community

Darylcar wrote:

it maybe affect on my battery to charge at night and remove it in the morning? It bothers me a lot last night of what should i do 😓.

No, it will not hurt your battery to put it on charge at night and take it off in the morning. In fact, it's recommended.

When to charge your iPhone or iPad - Apple Community

Darylcar wrote: "...battery health of my iphone 12 pro max which is I bought last year November and now in 99% . Why too early?"

Darylcar ~ It's not too early. Apple says: "Maximum battery capacity measures the device battery capacity relative to when it was new." ...So not relative to when you started using it in November. Also, in measuring a chemically dynamic process such as in a battery, the % is calculated by an algorithm and is therefore only an approximation. Nothing is wrong with your iPhone. Read more in this Apple Support Article:

iPhone Battery and Performance

...found by searching Apple's Knowledge Base.

õ¿õ¬

Darylcar wrote: "...what is the best way to keep it healthy as much as possble?"

Darylcar ~ See this Apple Support Article:

Maximizing Battery Life and Lifespan

...found by searching Apple's Knowledge Base.

õ¿õ¬

It is normal behavior.

You're comparing it to past phones running past versions of iOS, where battery health wasn't calculated correctly.

About recalibration of battery health reporting in iOS 14.5 - Apple Support

elittle wrote: "I'm experiencing the exact same thing. 5% drop in about 6 weeks. In March, my battery health was at 100% and now I'm at 95%."

What model iPhone is it? ...If it's an iPhone 11, iPhone 11 Pro, or iPhone 11 Pro Max, this may be relevant:

About recalibration of battery health reporting in iOS 14.5

õ¿õ¬