Battery Health Capacity Dropped

If you read the explanations and some the post above you’ll see why!

Draining the battery from 100% to 20% is severe cycling.Altough this is normal

and that what batteries are for, but this causes the wear and tear on the battery as electrolytes move up and down.

You battery is degrading in normal way.

You shouldn’t worry about it. Its a wear and tear item, and will not stay at 100% forever.

Like your brake pads in your car, you brake and they wear. Same with battery.

Some people here need to realise that battery wear and the Apple sensor only displays the wear.

When you hit 60% you battery will still work fine, just at the reduced capacity!

Davecai112 wrote:

here is the tip: don't expose it in hot temperature. Always charge between 20-80 ( not 100!) mine is still 100 after half a year.

You can charge the iPhone at any time. You don't have to wait until it drops to 80%

cherrym0508 wrote:

My Iphone is 2months old but the battery Health drops at 99%.

Yes, your battery capacity is dropping. That's what happens to rechargeable batteries.

Checking your battery health is only something you need to be doing if your phone is not working properly or if you're close to the end of your warranty. Check it in nine months. If it's close to or below 80%, make arrangements to have Apple test it and possibly replace it under warranty. Until then, stop making yourself crazy by checking it.

Sahibnoor wrote:

1)First drain all your iphone battery to 0 percent

2) Use a 5W charger that comes with to charge your iphone 11 pro max.I will take 3-3.5 hrs to fully charge iphone (slow charging)

3) It will give you a good battery backup and use low power mode along with that.With this you will get the best battery backup.

4)Charge your iphone only when battery falls below 30 percent

I am doing this and after 6 months of usage my iphone 11 pro max battery health is at 97 percent.

That's very inaccurate advice.

See this article:

When to charge your iPhone or iPad - Apple Community

Hi, what you're experiencing is perfectly normal, no need to worry about it unless the battery drains quickly from 100% down to 30% in a few minutes then that would be a problem.

Check this resources: iPhone Battery and Performance

Maximizing Battery Life and Lifespan

khushi244 wrote:

IdrisSeabright

thanks for the responce but the issue is that me and my mum bought the phone on the exact same day but her battery health is still at 97% that’s why i was concerned.

Unless you are using the exact same software at the exact same times in the exact same places at the exact same temperature, the comparison is not valid.

There are only two times you need to look at battery health:

1. If you're phone is not running properly
2. About a month before your warranty expires. If the battery drops below 80%, Apple will replace it.

The rest of the time, Battery Health does tell you much that's useful. It is an estimate. It does not decrease at a linear rate.

TheRoadRunner7354 wrote:

I completely agree with your post. I have had an iPhone SE 2020 since June and it has been 100% until yesterday when it was 99%, and today it's 98%. I think it's overestimated the health of my battery for a while and it is dropping quickly to compensate, maybe this could explain the issues experienced by some people?

You are correct. Battery Health does not display the decrease in a linear fashion. It will stay the same for a long time, then drop a couple of points. It also may, occasionally, go up a point.

If you feel that you (the general you, not you specifically!) must check it (there's no reason to unless you're experiencing problems with your phone or are close to the end of your warranty), always check it immediately after you finish charging it. That's when you're most likely to get the most accurate reading.

Best of luck.

This is for everyone who wants to keep there batteries in pristine condition. There is only one thing you can do to prevent the battery degrading fast. NEVER USE THE FAST CHARGER, or only use it when it’s really necessary. Else ALWAYS USE THE IPAD charger or the old 5 watt charger. iPhone‘s have a miserable fast charging system, degrading the battery super fast. My iphone X with conjunction of the usb-c fast charger degraded the battery in 2 months from 100% to 96%. Now my iPhone 12 pro max 3 months old is still at 100% because of using only the iPad charger. Check it out.

Health has improved a bit since the 8 Plus was put on the ~20% charge storage plan:

Note that the battery is >2 years old and was always charged to full overnight (until put into storage) yet it has held up very well. My wife has a 11 pro max which is already at 88% after a year. The 8 Plus charges to 4.35V and iPhone 11 and 12 to 4.45V. I think it's this high full charge voltage which has made the latest iPhones so susceptible to early degradation.

hey im pretty much late like 2 years but ive had my iphone 7 since 2017 and my capacity is currently at 98% and the best way i could explain is don't charge to 100% charge it to 80% when u charge it completely it completes a charge cycle and apples batteries are only able to withstand over 500 cycles. let ur phone die to 20% and turn on battery saver til it charges back to 80 then take the charger off. its worked for me these past 3 years i hope it works for u

Its true that not charging to 100% is good for the battery. But it's also true that unless you charge to 100% and leave the phone there for a good amount of time the algorithms which gauge the battery health don't get updated. Best to keep the phone preferably < 60% charged - but then every other month or so discharge to <5%, switch off the phone for 5 hours, charge to 100%, keep connected to charger for 5 hours, discharge to <5%, switch off the phone for 5 hours. This gives the gas gauge two opportunities to update the full charge capacity of the battery and thus battery health. You'll see that battery health will get updated after the full charge and the second <5% discharge.

I am an iPhone 12 user and I've noticed that my battery percentage has been dropped by 1 per cent after 6 months of usage of this product. I've been using some measures to extend my iPhone’s battery life:

1. Add automation to enter low power mode after the battery goes below 50%

2. Don't use a fast charger if possible (I use one that's why I've faced a 1% drop in my battery this early)

3. Don’t let your phone get hot, increase in battery temperature will decrease battery health permanently (switch off your device if it gets hotter)

4. Turn off auto-brightness

5. Turn off background processes of apps which you don’t normally use

6. Use dark mode most of the time (if possible)

Iphone’s battery health will decrease as the chemicals in it will age, but majorly it is also depended on ur usage as well.

I hope that these tricks help you out!

aka_tob wrote:

https://discussions.apple.com/content/attachment/f164649d-40af-4084-9912-56335ca002fc

this happened overnight

Well, it's going to happen sometime. The health is continuously degrading. At some point, it will drop enough to register a drop in a percentage point. It may drop another point this tonight or not for a month. There is no reason to even be looking at your battery health unless 1) you're having a problem with your phone or 2) your warranty is about to run out. Other than that, you learn nothing actionable.

It is completely normal, it depends on how much charge cycles your device goes through. The more you charge it, the lower the maximum capacity is. After 2 years, it should still remain at around 85 percent. If you use your device less, then it will use less battery then you less often need to charge it. I have used my m1 MacBook Air for 7 months and I'm on 98 percent capacity. Lower maximum capacity does not mean your device is broken. It is recommended to replace your battery if it reaches less than 79 percent. Replacements are very affordable.

here is the tip: don't expose it in hot temperature. Always charge between 20-80 ( not 100!) mine is still 100 after half a year.