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Jutah

macrumors 65816
Original poster
Mar 30, 2012
1,020
445
Hi all, i just found that my 12PM has decreased to 99% after just a 1,5 month of use and 27 cycle.
I charge it overnight with optimized option and a 5w charger.
I went below 20% yesterday for the very first time and this morning it's 99%. Is there a connection?
Average use last week: 7h

It's not normal to me.

What do you think?

Thanks
 
Battery health is fake news, don’t worry about it until your battery health hits 80% then get your battery replaced.

I’ve drained my battery to 15% previously, battery health still 100% has nothing to do with it.

I’m also a heavy user.


As long as you’re getting awesome battery life, that’s the main thing, don’t read to much into battery health.
 
I can only agree with previous posters. Our lives are ebbing away and batteries also have finite lives, but I would say 99% after a month is OK. If mine matches that I will be happy, although I wish I was sensible enough to not bother looking.
 
Then how would we know when our batteries need changing lol. 🤔🧐🔋

I don't believe it to be accurate anyway. My old 6s claims 95% battery health and it clearly is not. It drains 10% within seconds of firing it up. Coconut battery indicates its health is below 80%.
 
Hi all, i just found that my 12PM has decreased to 99% after just a 1,5 month of use and 27 cycle.
I charge it overnight with optimized option and a 5w charger.
I went below 20% yesterday for the very first time and this morning it's 99%. Is there a connection?
Average use last week: 7h

It's not normal to me.

What do you think?

Thanks

At almost 500 posts I’d have expected you to be less alarmed when the phone’s battery health estimate drops a single % point. Besides, that’s regularly discussed on the forums.
 
The battery health % is the one thing I wish apple would remove. People get overly caught up on it. I can’t say I don’t occasionally look at it but I know people who check it everyday which is ridiculous because as others have said in this thread and others around this forum it’s not a fully accurate representation of the health of the battery in the phone. I mean before battery health was included in iOS I know I worked away fine and i knew when a battery wasn’t as good as it was first day. I didn't need the phone to tell me.
 
I still have 100% for almost 6 months. I charge usually when the battery is close to 40% and charging up to max 85%. It seems this strategy is working good.
 
1% means nothing. It's an estimate. Worry about your battery health when you actually notice that it's declined significantly, not because the OS tells you there's been some imperceptible decline. It will probably be years before that's an issue and worrying about it in the meantime is only going to keep you from enjoying your phone.
 
1% means nothing. It's an estimate. Worry about your battery health when you actually notice that it's declined significantly, not because the OS tells you there's been some imperceptible decline. It will probably be years before that's an issue and worrying about it in the meantime is only going to keep you from enjoying your phone.
Preach.
 
I have my 12 now for 2 months and charge it often from 0-40% and then use it until it runs out of battery again and sometimes I charge it for 5 minutes on 20w. I feel bad about it.. but it still says 100%.

My grandma had a 6s for many years and used it really carefully. it had 98% after a few years. but still it started turning off for no reason and all the stuff you'd expect from below 80%.

I could imagine that bigger batteries are easier to calculate. that could be a reason why the phone knows already that there is only 99% left.
 
Charging it overnight is doing no favors to your battery. That’s too much time the battery will spend at 100% charge, which degrades its health. The optimized charging option might not even be doing anything for you, never worked for many.

The best you can do to extend your battery’s long term life is keep using the 5w brick and charge from 30% to 85%. Or not stress about it. Up to you.
 
Charging it overnight is doing no favors to your battery. That’s too much time the battery will spend at 100% charge, which degrades its health. The optimized charging option might not even be doing anything for you, never worked for many.

The best you can do to extend your battery’s long term life is keep using the 5w brick and charge from 30% to 85%. Or not stress about it. Up to you.

the optimized option works like a charm..
it stays 100% just a couple of hours before waking up.

I've stressed a lot the phone last week, usually i end my day with a 50-60% of battery, now i end my day with 25% left.

Maybe this is the reason.

My phone has 1,5 month of lifetime, but coconut says it was produced 3 months ago, so the battery degradation has been startedf 3 months ago.

I know that 1% is nothing, but it bother me a lot, all the people i know are still at 100%.

Can't understand the ration: if the software is not accurate it should be like that for everyone i suppose.

I'm planning to change the battery.
 
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Reactions: DaPhox
Do you plan on keeping your phone? Or do you plan on upgrading this year? either way, I would not worry and I definitely definitely not lose my sleep over a 1% drop even if it was only used 1.5 month. If the battery capacity does go below 80% before your warranty is up, Apple will replace it.
 
S
Hi all, i just found that my 12PM has decreased to 99% after just a 1,5 month of use and 27 cycle.
I charge it overnight with optimized option and a 5w charger.
I went below 20% yesterday for the very first time and this morning it's 99%. Is there a connection?
Average use last week: 7h

It's not normal to me.

What do you think?

Thanks
Stop worrying about this, it’s mostly an estimation. If you keep looking at it you will drive your self mad trying to stay on a particular %.
Sometimes the % will drop by 1 sometimes it will drop by 3% or even 5%.

The question is how is your battery life? Are you seeing the phone last a shorter time?
 
Have a notification that pops up when it’s time. When your iPhone hits 85% health it should have a pop up where they then show the battery Health, before that it must stay hidden.
That could work.
 
To people who says wishing Apple to remove this, Apple added it because iPhone 6 battery debacle and a class action lawsuit that forced Apple to replace battery at a cheaper price worldwide for about a year.

But I back the “do not worry” claim. Even the battery percentage on you iPhone is an estimate, let alone this battery health thing. Agonising over it is terrible imo.
 
Cellphone battery status accuracy is as reliable as the measurement of download time remaining. No two methods will ever be in agreement.
 
You own a iPhone 12 Pro Max, a phone that starts at $1,100 and up. A new battery is $69.....is it really an issue for you?

Exactly! When you look at it like this, it makes you realise how laughable it is to be concerned about some Estimated number lol.

It’s like everyone thinks the phone will sit at 100% forever.

On the other hand you get people who will be happy that their phone is at 100% Battery Health for a lengthy time only for the phone to self correct in an update an drop by about 5% in one go then they freak out and come to forums or Reddit to complain that this iOS update ruined battery health.




I still have 100% for almost 6 months. I charge usually when the battery is close to 40% and charging up to max 85%. It seems this strategy is working good.

Yours may end up self correcting in an iOS update, so you may see a multi % drop at some point.
 
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