iPhone 15 Pro Max Battery Health Dropped To 99% In Less Than A Month

himesh80 wrote:

Same situation brother😔

There is NO situation. On average, you can expect about a 1% drop in battery health per month. That is 100% NORMAL and EXPECTED. You cannot stop battery health decline in any way. It's what batteries do. ALL BATTERIES.

The "situation" is, people simply do NOT understand that rechargeable batteries lose the ability to hold the same charge as new with every full cycle battery charge.

I have 15 pro max purchased in 29 jan

Current battery health 100

i always charge over night to 100

Please select optimised battery charging in battery settings i always get 8 to 10 hours battery life I purchased my mobile in offline store if i push hard it still last upto 8hrs

You should also note that letting your battery charge go below 20% as is shown in your screenshot, ages a Lion battery faster. If you routinely do this, you are NOT treating the battery well. If you let the battery fully deplete, that is even worse. You should be charging your iPhone at night when you sleep, leaving it plugged in to charge, all night every night, with Optimized Battery Charging turned on.

You cannot compare your iPhone to your mom's iPhone as there is no way you are both using and charging your phones in exactly the same way. Nor doing exactly the same things at the same time. You may play more games or stream more media than your mom.

You might benefit from reading this --> Batteries - Maximizing Performance - Apple

I have read it here: How to Stop Battery Health Drainage of iPhone 14/15 Pro that if an iPhone is discharged completely 25 times (25 charge cycles) 1 percent battery health is dropped. I also further discussed this with apple and they have confirmed this. As you mentioned your brother's phone has still 100% battery health so he might haven't used 25 charge cycles yet, moreover there are other factors too that affect health drainage which you can read in the guide I mentioned. You can also follow some tips as well in order to stop battery health drainage too quickly.

Same answer as on the previous 11 pages of this thread. A drop of about 1% on average per month is NORMAL.

Replace the battery when it's down to 80%.

Let’s define “overheating”. If an iPhone overheats it shuts down so it can’t be used, and displays a message saying it must cool down before it can be turned on, and it will probably be unusable for an hour or so. If you are seeing this it is a hardware problem and you should contact Apple support: 

• Click on “Support” at the top of this page
• Go to Contact Official Apple Support

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

If you are not seeing this your phone has not overheated. However, if you fast charge your phone may pause charging at 80% and display a message saying that charging has paused, and will resume when the phone cools down. This is NOT overheating, and is normal when fast charging.

Also, some apps that use a lot of energy or that use cellular data rather than Wi-Fi can cause the phone to run warmer.

That's because it's normal.

A drop of 1-2% per month of use is normal, and expected there's nothing improper occurring.

If your Battery Health drops below 80% within one year, Apple will replace your battery for free under warranty.

The information in this thread states over and over that a decline of about 1% on average per month is normal. And that 98% reading that you see could well be 98.9%. Apple only displays full percentages.

I checked with apple support they said 1-2 % drop per month is normal. They can only replace battery if it reaches 80 before one year but i think it will reach to 80 after one year and 2-3 month then the device will be out of warranty and will have to pay 9800₹ for battery. These all are money game bro they just want customer’s money. Battery quality is worst on 15 series. Same issue with my iPhone 15 plus battery.

Please read through the post before posting the same "me too" response. There is absolutely nothing wrong with your phone or battery, it is normal for batteries to degrade over time. Usually about 1% a month.

doctorfetch wrote: "iPhone 15 Pro Max delivered on 5th November. It’s 29th December and battery health at 98%. Been charging at 80% limit too. What is going on?"

doctorfetch ~ Apple says: "Maximum battery capacity measures the device battery capacity relative to when it was new." ...So not relative to 5th November. And before then, it was probably in a storage facility for several months.

Also, in measuring a chemically dynamic process such as in a battery, it's unlikely that the estimate can be accurate to within 1 or 2%. Read more in this Apple Support Article:

iPhone Battery and Performance

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

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doctorfetch wrote:

iPhone 15 Pro Max delivered on 5th November. It’s 29th December and battery health at 98%. Been charging at 80% limit too. What is going on?

What’s going on is perfectly normal. After 2 months an iPhone battery would be expected to be 98%, as on average batteries lose about 1% per month. And it probably isn’t 98.0%, more likely 98.9 or 98.8% as the gauge only displays the whole number part.

roman_malhotra wrote:

Yups I purchased IPHONE 15 PRO

i'm facing the same issue within 80 cycles, i just checked today battery was on 99% I don't know it comes to this percentage today or when. I Also don't know whether it's normal or not. I'm using iphone from very long like since 11 pro. But this time I'm facing this issue. On the other hand battery backup is not so much affected. Maybe it's because of IOS version.

Do the math. It is rated to stay above 80% for 500 charge cycles. That means it is EXPECTED to drop 1% for every 25 charge cycles. So you are doing BETTER THAN THAT, because you have only dropped 1% for 80 cycles. Most phones with 80 cycles would be at 97%.

Look, you can drop all the chemistry stats on a typical use case scenario you want to but it isn’t as simple as that.

If your optimizing your iPhone (as I do to the 9s), have average usage without causing much overheating of the battery via demanding tasks or apps you can preserve overall battery health.

I’ll give you an example, I optimize my former iPhone 13 Pro Max and was able to maintain 100% battery health for nearly one year before degradation began. I had the 14 Pro Max and was able to maintain that battery health at 100% for nearly 6 months. I understand each OS is optimized differently but I think that speaks for itself.

It’s not always black and white or an apples to apples comparison based on battery chemistry science and pooled stats over time. The reason they optimize software is not only for performance but to maintain battery health and the longevity of the device over an extended period of time, especially with the new sustainability initiatives they are working toward.

I’ve never seen degradation happen this suddenly for ME personally, this is purely based on my experiences and judging by the comments I think others are feeling it too. Easy enough to google stats and drop them like it’s hot, but that’s not how life or in this case battery health degradation works in a perfect world.

Why are you shocked? It's been mentioned several times here, it's normal.

Apple states that a loss of 1-2% of battery health per month of use is expected.

If it falls below 80% within one year, Apple will replace your battery for free under warranty.