iPhone 15 charging optimization limit exceeds 80%

I’m having the same problem. My iPhone 15 charged until 82% and the 80% limit optimization was on the battery level went to 87% after restarting my device. Plz reply if someone knows why this happens and how I can fix this issue. Is it an iPhone problem and should I get it exchanged?

Thank you for the update. Apple really needs to fix a few things honestly. I’m also not happy with the iPhone 15 flashlight. My iPhone XS had a better and brighter light and with the 15 it looks pink. Then now the whole battery and charging issue.

My 15 Pro is only 4 weeks old I am on the 80% Limit but lately it now surpasses the 80% limit. I’ve tried toggling it off and on again but it still sometimes surpasses. Does anyone know a fix to this?

tldr : the 6% excess in charges is needed for the battery to complete 1 charging cycle.

I might explain this badly but hope you can understand. To avoid getting your battery being charged more than 80%, best tips is to always start charging at 20%. You can try this and confirm later.

The logic behind this is charge limit refer on the charge cycle. Battery being charged from 0%- 100% in one charging session considered to be charged by 1 cycle. If you charge from 20% and the battery limits the charge at 80%, your charge cycle is incomplete. In charging electronics battery terms, incomplete charging cycle is good while complete charging cycle is bad.

Is it ok to charge my iphone to 100%? , i updated my iphone to ios 18 and it didn't stop at chargingat 80% i thought it was a bug but it keeps on going and i noticed that it become laggy and drain faster than before and it only allow to optimize when i choose the 100%.. (btw im using iphone 15plus)

Is it ok to charge my iphone to 100%?

Of course. iPhones have been doing this for many years. Just make sure that you have Optimized Battery Charging enabled.

Connect the phone to the power supply at night and leave it connected all night....every night.

I've always been able to get 4-5 years use from the battery using this method. If the 80% option might result in a few more months use from the battery, I could care less.

I start every day with the battery at 100% and can get 2-3 more hours from the battery that way compared to an 80% limit, which in my opinion is more of a gimmick than a benefit.

It seems on my iphone that the battery % show the % of max, if I set max charge limit to 80% then the 100% shown on the battery icon means 100% of 80%... i.e. 80%

Go to the settings and you will see the graph of actual % for last 24 hours or 5 days.

This is not a bug.

charging cycles are like this. The phone needs to keep the battery healthy and sometimes it need to charge it more than the set value you have to stress the battery to keep it lasting as long as possible.

happen me a

couple of times but nothing dangerous. Can doh be annoying.

I also have the same problem. I have the battery limit set to 80% but it still charges to 100%. But it does not always. Just sometimes.

That worked for me! Thanks for explanation and hints.

try to update your phone to 17.1. After update I did not see any “overcharge” on the phone. Or maybe the calibration thing worked for me - because it was charging for 100 two or three times ina row.

I shall try to charge to 100% in the 80% limit mode, to see if that will calibrate the phone somehow.

Can you please tell that how it got resolved?