Battery Health Capacity Dropped

Unfortunately you can’t trust any data summarized by people on the internet rg licoo2 batteries. There is a lot of misunderstanding.

i find you have to go to the scientific literature to clear things up. When I read through most of the available evidence it became clear that much of what people think is true is actually quite wrong.

i encourage you to also dig deeper. For example https://www.sciencedirect.com/science/article/abs/pii/S0378775316309247 looks at different DOD and SOC levels when cycling and you can see that 0-60% beats everything else by a super high margin. Many other papers have similar findings.

Unfortunately article isn’t accessible for free. But just check out this chart from the paper:

I start using my iphone 12 pro since end of nov 2020 at that point the batt was 100%.

now today, i only realize it dropped to 95%.

really shocking! Dropped 5 % in less than 6 months!

what happen?

i also feel that the battery starts to drain faster than before.

can somebody help me?

I have tried the IOS restore via itunes with the IOS 13.3 update, & I restored my data from itunes & the battery health states 100%.

maybe the IOS restore helped or it was the update.

I will post back in a couple of days to see if the battery still reads 100%

Asifimmy wrote:

I did that iOS restore by iCloud it's still the same 96% capacity

It's not likely to change just because you restore from a backup. The battery health is stored in onboard battery diagnostics. Even if the battery was swapped to a new device, the battery health should go with it. I'm not sure what might happen with someone else, but it's not as if batteries really improve battery health other than some odd cases where the estimate is incorrect.

progbonvil wrote:

I can confirm this does work. Just completed myself. Was at 99% now back to 100%.

All you might be seeing is the estimate going up. It doesn't mean that the battery has somehow restored additional capacity. It's all smoke and mirrors.

Wilsontoad wrote:

Obviously, the slower your charging, the better is it for your battery. But is it worth it to wait up to 4 hours (or possibly more) using the 5W charger to hit 100% for your iPhone 11 Pro Max, or a good 2 hours using the 18W charger, your call.

That's the irony about someone spending over $1000 on a portable device and then going through extraordinary means to make a battery last that only costs $79 to replace. It's like someone spending $120K on a Porsche and then driving it like grandma to avoid spending $1200 on new tires.

Loss of battery capacity is inevitable and there are only limited things one can do to slow it down. Apple doesn't provide a 25-75% mode (which I've seen before) so the only other way would be to be completely obsessed with not allowing it to get below a certain level and constantly monitoring it is not easy.

The one thing I know will probably extend battery life is to connect it to a USB battery pack or charging case all the time. I know Amtrak was using the iPhone 4s in a special battery/code reader case. They were using those for years on the original battery, although I'm not sure if they upgraded.

My 11 pro is two months old. My battery health is suddenly at 98%!

2% for 2 months? Man that is bullshit! Reading all these similar cases I can see there’s clearly something wrong with it. Why can’t you Apple? Admit it and do something about it quickly!

we do have the same issue. I got my new phone last October and the battery life went 99% last November and now it’s 98% on December.

I never encountered this issue before with my iPhone XS. Rapid decrease in battery life is alarming.

I think this issue is only with we all iPhone 11 users

i wish apple could read this post and do something about it

anyways we have to live with it as they won’t do anything

I am the one who gave it to their 2 Centre’s on field for 7 days

they returned back without doing anything and said all is well 🤨

I'm trying to remain respectful, but most of what I've read about in this thread is within what is reasonable for battery decline. Apple says 500 cycles to 80%, and a loss of 1% per month is well within that. There can be a variation too, where some decline faster and some decline slower. 97% after 2 months isn't really all that unusual. The decline is not guaranteed to be a straight line either.

Apple was hesitant to actually bring out the Battery Health feature because of worries that users would become battery hypochondriacs worried if "losing 1%" was normal or who might compare theirs to that of friends and family. It's normal. Just relax and enjoy your iPhones. If it comes time to do it, changing the battery is pretty easy and only a fraction of the cost of an iPhone.

deggie wrote:

Apple added the battery health option due to the iPhone 6 shutdown saga. Can you post a link where it says they were concerned with battery hypochondriacs?

Well - it was more than just the iPhone 6, and I know why they put it out. However, it was always present but previously only available through an official diagnostic. And to this day one can still only read the official battery health reading on an iPad or earlier iPhones through an Apple diagnostic.

But it's pretty obvious that once they put it out, a lot of users who wouldn't normally worry about it had a number to follow and either worry and/or brag about. Whether or not you think my assessment about Apple's intentions in keeping Battery Health hidden are wrong, the result of releasing it has been a lot of "battery hypochondriacs" needlessly worrying about what's normal and expected battery wear.

To everyone affected by a percentage drop in the Battery Health, please keep it mind that your battery is fine. Especially if your phone is only a couple days/weeks/months old. It's just a number and theoretical value, and there is no need to do anything, in fact you cannot do anything even if you try. A Service Center will return the phone to you stating that everything is fine.

There is no difference between 100% and 99% in the Battery Health.

Only worry when the percentage drops below 80%. If you really experience a shortage in Battery Life (meaning that it drains quicker and you need to charge more often),

OK. Glad that you clarified that it didn’t apply to the 6 Plus, 6s, 6s Plus, 7, or 7 Plus. I suppose it wasn’t the Primate Labs test of the iPhone 6s that brought battery-condition based throttling to public attention.

https://www.geekbench.com/blog/2017/12/iphone-performance-and-battery-age/

I got mine about 2 weeks after launch due to back orders my iPhone 11 Pro Max is down to 98% already. My iPhone XS Max didn’t drop at all for about 7months I believe the issue is the fast charger it’s killing the battery health a lot faster.

Asifimmy wrote:

I can understand what u r saying .... But my mobile is now at 94% after 62 days and what's explanation you will give?

I charge once in 2 days.

Well - there are a lot of responses here and at least most are what I'd say are normal or typical.

While your wear seems to be atypical, Apple really won't consider anything to be defective unless it goes below 80% during the warranty or AppleCare period. It might be possible to ask for an early battery service (for a price) although there seems to be more indications that Apple and/or AASP aren't authorized to perform a battery replacement unless Battery Health is under 80%.