iPhone 13 Battery Health Drop

I have an iPhone 13 I got on December 5, 2022 The battery health says 97%. I hope that’s normal. It was just a month ago that the battery health said 98% within the last month. It went from 98% to 97% the battery health is that normal. I understand the battery health is gonna go down for within a month it went from 98% to 97. I’ve only had the iPhone 13 brand new since December 5, 2022. I don’t think I was expecting before summer to already have the battery health be 97%. And I get it people are telling me. Oh it’s healthy. It’s fine but like I have this weird feeling that I won’t even have a phone a year like by December 2023 I wouldn’t be surprised if it gets down to like in the 80s. But within a month, it shouldn’t have gone down that much but I don’t know.

An average iPhone that is 6 months old, as yours is, would be at 94%. So your phone’s battery performance is better than average.

Also, note that the displayed value does not include fractions, so when it goes from 98% to 97% it has actually gone from 98.0% to 97.9%. It has not dropped a full percent.

Read my post right above yours for more detailed information.

Well, I’ve had my iPhone 13 since December 2022 and its battery health is already at 97%. And just last month it was at 98. And today I looked and the battery health says 97%. I guess I wasn’t expecting before summer because we’re not at summer yet that it would already be at 97% the battery health I don’t know if that’s a good thing or not I came from an iPhone eight that had really bad battery. That’s why I got the iPhone 13 because my iPhone eight was at 80% battery health and would last maybe two hours on a good day I could maybe get 3 to 4 hours out of it. It was usually anywhere from 2 to 3 hours. It just didn’t last very long. My iPhone 8 I felt like I was charging it way too much. So then I got the iPhone 13 and December. Well I was expecting way later on mid 2023 before it ever got to where it is. So I’m hoping that there’s nothing wrong with my battery on my iPhone 13 because as I mentioned it was Botton December and it’s already at 97% battery for health and it’s only been at 98% battery health for a month before it went down to 97. I don’t know what I’m doing wrong. An apple just said oh well it’s still in the 90s so it’s still good battery health. But like I don’t want to get to the end of this year and I have to replace the battery like it should at least last a year before I have to replace the battery but I have some weird feeling I might be replacing it at the end of this year I don’t know.

Kittycat714 wrote:

But like I don’t want to get to the end of this year and I have to replace the battery like it should at least last a year before I have to replace the battery but I have some weird feeling I might be replacing it at the end of this year I don’t know.

If the battery drops below 80% before the warranty runs out (highly unlikely), Apple will replace it under that warranty.

I purchase my iPhone 13 Pro in June 2022. Today, after more than 1 year it’s battery health has just dropped to 98%.

I rarely charge it above 80% with the help of an App called Battery Alarm. I also have charging optimised and various settings adjusted to save battery life like Push emails and Background App refresh switched off

Rechargeable batteries do not like charging above 80/90%, it kills their lifespan.

The biggest error most people make is charging overnight.

My phone cost me £1000. Why would I intentionally damage it?

I also drive an EV and follow exactly the same principles.

We charge our phones overnight, every night to 100%. My 14 Pro is currently at 100% capacity after 9 months. My 4 year old XR is at 94% after 4 years. My wife’s 8 is 6 years old. Its battery is 98%. So perhaps your information about what batteries “like” is misguided.

Actually, the Best Practice is to charge overnight, every night, with Optimized Charging enabled and automatic backups also enabled. As Apple recommends.

My granddad used to say It ain’t what you don’t know that hurts you, it is what you know that ain’t so.

You are missing one factor: Whether the phone runs on battery 100% of the time, or uses external power some of the time, which reduces the number of charge-discharge cycles. When you charge overnight, the battery will fast charge to 80%, then pause. During the nighttime pause the phone will use mains power instead of battery power, allowing the battery to “rest”, and thus reducing the need to charge the battery quite as often. The phone will resume charging to reach 100% when you are ready to use your phone; it will “learn” your usage pattern. If you enable iCloud Backup (Settings/[your name]/iCloud - iCloud Backup) the phone will back up overnight also, assuring that you can never lose more than the current day’s updates.

The 100% factor is the battery should not be kept at 100%, not that it should never be charged to 100%. Follow Apple’s guidance to charge overnight with optimized charging enabled it will only be at 100% for a short time, as it will start discharging as soon as you discount it.

There is a fundamental difference between an EV car and an iPhone; you can use an iPhone while it is plugged it, and it can use external power rather than the battery. You can’t use your Tesla when it is plugged in unless you have a VERY long extension cord.

I bought my Iphone 14 pro last December 2022 and now July 2023 the battery health becomes 95 so fast. Idk what happen. I make sure that I charged my phone before its get down to 30%. I guess its because of the updated then?

mae8096 wrote:

I bought my Iphone 14 pro last December 2022 and now July 2023 the battery health becomes 95 so fast. Idk what happen. I make sure that I charged my phone before its get down to 30%. I guess its because of the updated then?

On average, batteries will lose about 1% a month. Therefore, 5% in 6+ months is better than average. Nothing is wrong with your phone.

Why are you checking battery health? Are you experiencing other problems with your phone? If you are not, there's no useful information to be gained by checking. Check again about a month before your warranty expires.

I’ve had my iPhone 13 mini for around 6 months now and battery health dropped from 98 to 95 in just a week, so after 6 months i’d dropped 5%… I’ve had an iPhone SE (2020) and it dropped to 99% after 1 year and 5 months of heavy usage, basically after 500 charge cycles. iOS 13 and 14 were doing a great job on battery health, but i feel like iOS 16 is the cause of the problem here, because as soon as i updated my SE to iOS 16, is dropped by 6% in 2 months. Does anyone know how to stop this or am I just gonna have to replace the battery sooner than I thought?

After 6 months dropping to 95% (and if it has just dropped, actually to 95.9%) is normal. Your iPhone SE battery was better than normal.

A battery is a chemical device, and chemistry is generally pretty variable and uncertain, as well as being analog, not digital. Apple specs the battery capacity to remain above 80% for 500 full charge cycles, but that is a minimum requirement; there is no published maximum expected capacity. So sometimes batteries will perform much better than that minimum specification, and sometimes the change in maximum capacity won't be linear. There is no way to predict in advance what the real-life performance of any specific battery will be.

All iPhones have a specification for the battery. As an example, for the iPhone 14 Pro that is 3200 milliampere-hours (MaH). So the battery monitor is calibrated for 100% at that value. But there are variations in manufacturing, so some batteries will have less capacity, and some will have more. Suppose your battery had, say, 3520 MaH capacity (10% over standard). That would still show as 100% (even though it was actually 110%), but as it aged the health would stay at 100% until it fell below 3200 MaH. This would appear to you as if the battery had fabulous life, until suddenly it didn’t.

How long has it been since the phone was new from the factory? Did you buy it new, or is it a previously owned phone that is new to you?

And do you follow best practices for charging, which means charging overnight, every night with Optimized Charging enabled, and never letting it drop below 20%?

I bought it new at the Apple store. Optimized battery charging is on and clean energy charging is on. I charge every night with Apple’s 5W brick and Type-A cable. I almost never let it under 20%, but it happened sometimes. Never have I let it discharge to 0% and I do a very light use of the phone. For example I’ve had 6 hours of lessons today and kept the phone in airplane mode the whole time. Got out of class with 70% battery. Could it be cuz I have an Apple Watch that’s always connected and always connected to GPS keeping track of bike workouts?

I am wondering why my iPhone 13pro battery capacity is suddenly reduced by up to 3 hours the week prior to the iPhone 15 release. Seems like Apple were fined millions for this same battery reduction scam a year or two back?

Robert Pearson wrote:

I am wondering why my iPhone 13pro battery capacity is suddenly reduced by up to 3 hours the week prior to the iPhone 15 release. Seems like Apple were fined millions for this same battery reduction scam a year or two back?

No, they were not. Apple settled a suit by people who were upset that Apple had not communicated properly why phones were being throttled. Apple was throttling the processors on phones with failing batteries so that the phones didn't shut down precipitously.

Maximum battery capacity is not measured in hours but in percent. If you go to Settings>Battery>Battery Health you can see your battery's maximum capacity. If is 80% or less, you need a new battery.