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AnyaB

macrumors newbie
Original poster
Aug 27, 2019
13
0
I have an iPhone 11 I purchased last month. It doesn't get a ton of use during the day, but I still plug it in and charge it every night cause you never know what the next day might bring, lol. Sometimes the battery will be anywhere from 97-100% full when I charge it at night.

The past few weeks, I've noticed something...odd. If I plug it in while the battery is still at 100%, the charger doesn't get warm at all, it's like it's not even charging up (and the charger would get warm if I charged the phone at 100% for the first few weeks of having this phone). If I charge it when it's at 100% at the end of the day, with very little use between when I unplug it (at around 4AM) and 12:00pm, it will start to drain the battery around noon the next day.

However, when the battery percentage does drop and I charge it, the charger gets warm and it charges just fine. Then, the next day the phone can be used quite a bit, and it'll stay at 100% all day.

It's like every other day, the battery starts to drain and for the first few weeks of having this phone, it wouldn't do that.

Now, the other night I didn't charge it all and it only dropped 1% (from 100 to 99) overnight. So, I don't know what's going on. Battery health is at 100%, optimization is not turned on (I thought that may have been the problem). I tried different chargers, restarted the phone, but I get the same result. Googling this issue didn't give me any answers. Maybe I'm overreacting, but I've been so burned in the past with iPhone battery issues.

I doubt asking anyone here for their insight is going to help, but I thought I'd give it a try.
 
I was going to say optimized battery charging but I see you turned it off. Having your battery at 100% all the time (and heating it up) is not good for it anyway and ages it faster. Even without optimized charging turned on I think it stops charging once it reaches 100% so that's probably what you are seeing. If I were you I would turn on optimized battery charging and let it do it's thing (it will learn your habits and probably will wait to top up the battery until just before you get up in the morning, minimizing the excess wear on your battery).
 
I have an iPhone 11 I purchased last month. It doesn't get a ton of use during the day, but I still plug it in and charge it every night cause you never know what the next day might bring, lol. Sometimes the battery will be anywhere from 97-100% full when I charge it at night.

The past few weeks, I've noticed something...odd. If I plug it in while the battery is still at 100%, the charger doesn't get warm at all, it's like it's not even charging up (and the charger would get warm if I charged the phone at 100% for the first few weeks of having this phone). If I charge it when it's at 100% at the end of the day, with very little use between when I unplug it (at around 4AM) and 12:00pm, it will start to drain the battery around noon the next day.

However, when the battery percentage does drop and I charge it, the charger gets warm and it charges just fine. Then, the next day the phone can be used quite a bit, and it'll stay at 100% all day.

It's like every other day, the battery starts to drain and for the first few weeks of having this phone, it wouldn't do that.

Now, the other night I didn't charge it all and it only dropped 1% (from 100 to 99) overnight. So, I don't know what's going on. Battery health is at 100%, optimization is not turned on (I thought that may have been the problem). I tried different chargers, restarted the phone, but I get the same result. Googling this issue didn't give me any answers. Maybe I'm overreacting, but I've been so burned in the past with iPhone battery issues.

I doubt asking anyone here for their insight is going to help, but I thought I'd give it a try.

You haven’t been completely clear about your issue but from what I gathered I’ll say this.
Firstly, iPhone stops charging once it’s fully charged even if you plug it in for hours. And that’s why the charger stays cool.
Second, the iPhone stays at 100% longer for whatever reason. This is the reason it’s staying at 100% all day for you.

All this said, stop the practice of keeping your iPhone at 100% all the time. Charge only when it falls close to 30% if you’re so inclined on prolonging the battery life. The reason they introduced the Optimized Charging feature is so that the iPhone spends less time fully charged. Avoid that!!

And before you do all that google battery calibration for iPhone and that’s going to solve most of your problems.

From what you said, your iPhone seems fine and you got nothing to worry about. Just change your charging practices and you’re not be having this issue.
 
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