iphone 12 pro max battery health degrading

even if i do that, i sleep at a different time every day, so it won't be the same.

so for the last few days, i plugged it in at different times, but they were all between 8 PM and 10 PM. it usually takes 6-7 minutes to charge 3%, but today, i plugged it in at 9 PM and after 6-7 minutes, it was already 6% higher! that didn't happen for the last few weeks, so what happened today? my capacity dropped too!

Is it because my phone is used to charging at 8 PM, so since i plugged it in at 9, it tried to charge faster to finish faster??? only 2 weeks ago, i plugged my phone in at 5 PM compared to 3:30 PM the previous day (1.5 hours apart), and nothing happened.

yeah but i sleep at a different time every day, and today i plugged it in an hour later than yesterday, so why did it charge faster? last week this happened too, and my capacity stayed the same and it charged normally.

how will i be able to predict if an issue like this happens again though? there has to be some reason why it charged way faster today even when i didn't do anything differently. like i said, i've been plugging it in at different times every day, sometimes 2 hours apart, and nothing happened till now.

crystal_star wrote:

how will i be able to predict if an issue like this happens again though?

You can't. All you can know for certain is that your battery health will continue to decline. You can either spend your time worrying about that unchangeable fact. Or you can use and enjoy your phone until the battery needs to be replaced and deal with it then.

so plugging it in later than the day before isn't necessarily causing the problem? is there a specific rate that the phone is supposed to charge too? because what i experienced yesterday was way faster than usual. and this isn't because the phone has learned a usage pattern, right? if batteries are made to charge at the same time every day, that's very inconvenient because some people don't have "routines." i sleep at a different time every day, so that won't really be a "routine" for optimized charging.

crystal_star wrote:

so plugging it in later than the day before isn't necessarily causing the problem? is there a specific rate that the phone is supposed to charge too? because what i experienced yesterday was way faster than usual. and this isn't because the phone has learned a usage pattern, right? if batteries are made to charge at the same time every day, that's very inconvenient because some people don't have "routines." i sleep at a different time every day, so that won't really be a "routine" for optimized charging.

There's no particular routine if you don't have a regular schedule. I have Optimized Charging turned on, but it will charge up to 100% pretty much all of the time. I've only see it indicate that it was holding off on the charging once or twice. And as far as how much it helps, I'm skeptical. What would really help for battery longevity is a way to allow the user to program a lower maximum charge level, like one can do on other battery powered devices like electric cars or laptop computers.

i just don't want it to get in the way of when i can't charge my phone overnight, because yes, i have to go places at 3 AM sometimes, so i need it to finish earlier on those specific days. i don't want it to make my phone charge faster, lowering the capacity by a percent every time it does so. i want it to leave my phone alone when it's not charging overnight and stop thinking that i'm gonna charge at the same time every day, because i'm not. sometimes i won't be able to charge till 2 hours after the time i charged the previous day. the only reason why i want to keep it on is to reduce battery aging over time.

yeah i don't think it can see a routine for me either, but if it tries to determine one, it's going to have to use other details, like the unplugging time, right? since for the last week, i've been unplugging at around 10 PM to go somewhere until 1 AM, it tried to charge faster on a day that i didn't need to unplug that early afterwards? this is so inconvenient.

Marinoalya wrote:

Some of you sound like you’re representing Apple

But, we're not. Just because you don't like the answers doesn't mean we are.

The person to whom you replied definitely doesn't sound as if they are representing Apple.

Marinoalya wrote:

you must be one of them because I wasn’t talking about you.

I have no idea what that means.

This is a user-to-user forum. Apple's participation is limited. I don't believe anyone from Apple has posted in this thread.

amalia185 wrote:

Batteries aren’t cheap in Belize for iPhones

I get that. But the a high quality battery is actually quite inexpensive. An Apple battery service isn't really paying for the battery, but the service, materials (like new seals), and the expensive equipment that Apple uses to make sure everything is correct.

If you really want to, you're free to choose outside repair that's cheaper than Apple. You'll probably get a warning that your battery isn't genuine and the battery health won't display. But many choose that and live with the results.

amalia185 wrote:

Didn’t get an answer in regards to this ! Takes long to download !

https://discussions.apple.com/content/attachment/5a854f70-a20c-4619-8c26-fc9dde177571

It's not downloading (it doesn't need any internet or Bluetooth access). It's calculating how much each storage category is and solely on your own iPhone, and it's going through everything. How long will depend on how much storage you're using. It shouldn't take more than a minute though.

Is there also a specific rate that the phone is supposed to charge? I know it’s not fixed and that it slows down as you get higher, but is there a real rule? Usually, I notice that it charges 2-2.5 minutes per percent, but today, it was a lot faster. Thankfully my capacity didn’t drop, but the last few times it charged faster than ~2 minutes per percent, it did. I just hope today’s little change doesn’t affect the future charging. it might because i just updated and the phone is doing some housekeeping, but in conclusion, is there a specific rate?

crystal_star wrote:

Is there also a specific rate that the phone is supposed to charge? I know it’s not fixed and that it slows down as you get higher, but is there a real rule? Usually, I notice that it charges 2-2.5 minutes per percent, but today, it was a lot faster. Thankfully my capacity didn’t drop, but the last few times it charged faster than ~2 minutes per percent, it did. I just hope today’s little change doesn’t affect the future charging. it might because i just updated and the phone is doing some housekeeping, but in conclusion, is there a specific rate?

Not really. There's probably a maximum rate that the charging system considers safe, and you're right that the charging rate tends to go down as it approaches getting full. It tends to create more heat as it approaches 100% and reducing the charging current is need to prevent damage to the battery, and even for safety reasons.

It theoretically should charge near the maximum rate when it's up to about 70-75% if the power adapter can supply enough current. But a less powerful adapter might be able to supply the requiredcurrent when it's near 100%.

By “maximum,” do you mean the maximum fastest rate?

So what I do is, I plug my phone in and turn it off. Exactly 7 minutes later, I turn it back on to see if it’s charged 3% higher than what it was when I plugged it in. It’s fine if it hasn’t reached 3%, but if it’s more than that, then that’s a problem because it’s trying to keep up with some schedule, right? Today this happened, but thankfully, my battery capacity didn’t drop. Previously, when it had charged from 60-64 in 7 minutes, my capacity went from 94% to 93%, which was very upsetting. Just two weeks ago, it went from 58% to 64% in 7 minutes! That averages to about 1.2 minutes per percent, which is really, really fast! And that caused my capacity to drop from 91% to 90%, which was even more upsetting.

All I want to know is; is it supposed to be that way?