iphone 12 pro max battery health degrading

I got my iPhone 12 Pro Max in November when it was released. My battery health starting declining a few months ago and now I find that nearly every 5-10 days my battery health is dropping 1%. It’s been nearly 7 months & my battery health is at 93%, I’m sorry but it’s just plain ridiculous. I know the batteries are different in every phone, but I’ve never had this problem! Also before it’s mentioned, I have optimized battery charging on, I never charge my phone with a phone case on it (so it doesn’t over heat), I don’t let my phone fully die before charging it, usually between 30-50% is when I plug it in and overall my I take amazing care of my phone. I have communicated all of this to apple via their support. The first time they checked the diagnostics & I was told it’s fine & was told to try & reset my phone, okay fine. Tried that, didn’t help! So a few weeks went by, I contacted them again (I had lost 2 more percent in battery health by then) & they ran another diagnostic test & said my battery is ‘normal’ and if I wanted to book an apple appointment to go in store I could. So I did! AND SHOCKINGLY they were ZERO help. They said the exact same thing! That the diagnostic test is showing my battery is ‘normal’ and if I want to replace the battery I have to pay for it. 😐🙄 So I simply have no idea what to do, because clearly a lot of us in this thread are struggling with poor battery health, so hopefully apple does something soon.

There is nothing wrong with your phone. And you're waaaay overthinking battery charging. See here:

When to charge your iPhone or iPad - Apple Community

The only way you could get your phone to look like that is if there was something wrong with your battery. Just don't look at it.

crystal_star wrote:

Do you know how hard it is to not look at it if it's right there? The temptation is unexplainable.

Sorry, never had that problem. I haven't looked at mine in months.

I really don't want to charge my phone overnight.

Why not? Your phone will fully charge and, if you have iCloud enabled, it will also back up so that, should anything happen to your phone, you'll never be more than a day from a backup.

I really don't want the capacity to lower anymore because I know people who have had theirs for way longer than me, and they're still at 100.

Your capacity will continue to drop until the battery is unusable. That's the way it works. Batteries are consumables.

I might not get a new phone for like another 3-4 years unless of course this one breaks.

A battery wearing out is normal, not something "broken". If the battery capacity drops below 80% while the phone is under warranty, Apple will replace the battery. If it happens after the warranty expires, you don't have to buy a new phone, just have the battery replaced.

crystal_star wrote:

for years, i've heard that charging overnight is really detrimental. my capacity will lower for sure, which is the first thing I want to prevent. It could explode overnight. And it could drain down to 99% right after I go out the door.

We've all heard lots of things for years that turn out not to be true. Essentially what you've heard are the old wives' tales of battery charging. They simply aren't true.

The article I linked to, which recommends that you charge overnight, is written by an engineer with 50+ years of experience.

Turn on optimized battery charging and put your phone on charge overnight. Don't put it somewhere that it will overheat (e.g. under your pillow). And stop worrying about it.

It is normal as has been stated by Apple before.

Newer phones have more accurate battery healthy tracking and so it’s like a gas gauge that either reads Full or 3/4 vs. one that reads smoothly in between. You’re not getting worse mileage if one shows you are down to 7/8 tank while the other still shows full, it’s more holistic than that.

I never use fast charge, high power charge, wireless charge and charging socket on car. I will never drain my phone or even like battery to drop blow 60%. If u are doing all the above or having high charging cycles , 90% like u may be reasonable. Look at my old X and Xs Data, this looked more reasonable like many other. New 12pro battery data looks normal now, at least the capacity does not drop with 6 charges.

Yes, and the point you refuse to accept is a 1% drop per month in Battery Health is normal given average use, which is why Apple sets the 80% threshold over the course of a year.

I’m not “killing” the battery, I’m using it like every other device I’ve ever owned including laptops, iPads, iPhones and non-Apple cell phones.

Purchased from Bell in October 2020.

Today, the 12 Pro Max is at 91% and dropping at a rate of 1% every 3-4 days.

I am still covered under Apply Warranty and plan to replace the phone because of this.

Advertising indicated that the 12 had a better battery. I don't agree.

My 8+ didn't start to drop until a year had passed. It's only going on 9 months and I have lost 9%.

Optimized battery charging turned on. Don't use it below 20% and charge it 99% of the time, at night, while sleeping, at around 35-40 percent capacity, from the day's use.

All certified cables and chargers being used.

What's up Apple?

I'll just get it replaced through Bell. My ex-wife also got hers replaced 3 weeks after she got it from Rogers for a tiny scratch on the glass, that she missed on opening the box. She had 2min of airtime on the phone. It's still under the 1yr for Apple warranty.

5G definitely increases energy drain , just like draining your battery . But many people are using 5G without any drop of health at all, this cannot explain the rapid drop . Check your charge cycle . My case was 1% drop per 3 charge cycle . Charge cycle to health drop ration if more important .

Upon experience i can definitely say that iphones have been stating wrong battery health due to poor calibrating capabilities. To ensure, just reset and restore your device and see that your battery health will almost be incremented by 2% or so.

I've had mine from launch and its down to 93%. It started dropping when I switched from wireless charging to wired charging. Dropped from 100% to 93% within about 2 months. If it hits the 80's then I'm getting it checked out. Switched back to wireless charging to see if it helps.

If you are at or below 80% within one year, Apple will replace your battery for free.

Otherwise, there is nothing to worry about.

Wait until October or so and if you are at or below 80%, make a service appointment then.

Good point. Batteries do fail prematurely, as yours did. Apple has diagnostics not available to us peons that can do an in-depth test of the battery and charging circuits. My wife’s iPhone 8 showed problems at 95%; the Apple store sent the phone for analysis and gave here a loaner, because they wanted to determine what went wrong. They replaced the battery and returned the phone, but never told me what the problem was.

OTOH, it is normal for a battery to lose capacity with use; all batteries do. That’s why Pep Boys auto parts stores devotes half their in-store inventory space to replacement batteries.

It can be tricky at times to distinguish normal wear and tear with an actual defect.

It’s completely normal.

I have a launch day 12 Pro Max and it shows a health of 90%.

If it’s unacceptable to you, you’ll need to invent a different battery technology as the same occurs with all devices, Apple or Android.