iPhone 15 charging optimization limit exceeds 80%

There was a know bug with this feature in earlier versions of iOS. Update your iPhone 15 to the latest version and the issue should be resolved.

Note, the iPhone may still charge to 100% sometimes to calibrate the battery.

It’s crazy how this is STILL an issue even with the latest 17.2.1 update. My phone charges intermediately since brand new then replaced it with another brand new one that did the same exact thing. Refused a refund, never charged to 100% even with optimization turned off. Only seems to happen with the iPhone 15 Plus I’ve been reading

They will NOT exchange it for the battery issue. It passes their “test” so they claim it is “fine”. I’ve talked to so many managers and service techs. We’re all stuck with this issue unfortunately. My phone has charging issues where it disconnects and reconnects all the time and stops at 80% with charging optimization off and doesn’t go past no matter how long it’s on there. The USB-C charging has major problems. The latest iOS 17.4 has still yet to fix it 6 months later.

Apple states very clearly that the phone will charge above 80% up to 100% "occasionally".

The real question here is what exactly is meant by "occasionally". For some users, this might be every 7-10 days, others a few weeks and yet others every 4-6 weeks.

Having tried it both ways, I get better battery performance enabling Optimized Battery Charging and turning Off the 80% gimmick. Soon, there will be other new "gimmicks" in a new iOS version.

I connect the phone to the adapter at night and leave it connected all night.....every night.

This way, I start every day with the battery at 100%. If my battery dies a few months earlier than other users who are using 80% and charging more often, I could care less.

harmen369 wrote:

Updated to 17.1.1 but the bug still exists. Even with 80%-limit on the battery will charge to 100% --every time--. Can anyone report this to Apple, or know any solution?

You can and should report it to Apple.

Product Feedback - Apple

If you have Optimized Battery Charging enabled, you have nothing to worry about.

You did not tell us what iPhone model that you have, but the iPhone 15 displays these options:

• Optimized Battery Charging
• 80% Limit
• None

If you have an iPhone 15, what setting is currently enabled on your phone?

More info from Apple here:

Updated to 17.1.1 but the bug still exists. Even with 80%-limit on the battery will charge to 100% --every time--. Can anyone report this to Apple, or know any solution?

The last few days the phone charges to 81 percent exactly. Ios 17.3. Before that it was charging to 80 with one or two times to almost 100. 15 pro maxt

i have iphone 15pro and it still charge at 100% even it is set to stop at 80% what should I do?

Yes, I also facing the issue

Mine too i Set The limit to 80 bit It charged to 95 Apple please fix fast

As we speak mine is on 89% and still going, the 80% limit is on. If it's a bug please fix it on time, before the batteries spoil

Using iPhone 15 with latest OS updates.

With 80% Limit enabled, your iPhone will occasionally charge to 100 percent to maintain accurate battery state-of-charge estimates.

In case if it charges above 80% always, that’s a thing to worry..!

I just noticed this on my iPhone 15 Plus for the first time after 17.5.1 update.

I also having the same problem. I always set it to 80%limit but today when I took the phone the battery was 92%