iPhone 15 Pro Max stops charging at 80%

Hi. I’ve had this issue! Apple even sent me out a new phone and the issue still persisted.

The last two nights I have gone back to USB- type C charged and it has since charged to 100%.

I think the 20w fast charger that is supplied with the new phones is charging up the phones too much which caused it to heat up and stopped charging at 80%

Multiple Apple stores nor a customer service provider could figure this fault out, I’ve had to figure this out myself.

same issue with mine, i had to unplug and plug again to continue charging, has your charging continue reach 100% now even set to NONE? whats the update?

I am having the same problem and have not yet found a solution. I charge my phone for the day and do not charge it again until I go to sleep. I want it to charge to 100% every time. Very frustrating that it stops at 80, even when optimization turned off.

There's a new setting under 'Battery' which gives you the choice to optimise charging up to 80% for better longevity of the battery life. You can change it to standard optimisation or none at all

I believe the 80% topping out limit is new, you are correct in saying the optimised charging has been there for some time but that charged past 80% once it learnt from your charging patterns.

the new limit doesn’t charge up to 100% if activated. It’s one of 3 options now available

Why has this been driving me insane since I got my phone in November and I could not find any info on it until now ... I'm going to try swapping my block out and see if that helps.

Had tried 2 options and it charged past 80%:

-unplug when it reaches 80% and plug again to resume charging to 100%

-charging using the provided usb-c cable to a laptop

i'd like to know for those guys who said to use a new charger. did you guys use a brand new charger by Apple or a third party trusted brands like Aukey, Anker, U-Green etc? currently im using the 20W Model A2305 of Apple that I've been using for over 2 years. And I don't want to buy the same type of charger esp if it's the same model number cause what assurance do I have that it won't perform the way my present charger does. This is my dilemma.

Hi, happened to me also but when i used another adapter (new adapter) the problem disappeared 😊 hope it helps

I have had 15pro for 1 month and experience the same 80%. Called Apple and was told "no problem with the Battery" then why only 80 %? I ..have changed settings not different. My iPhone XR works better than the phone.

Adam Gates wrote:

There's a new setting under 'Battery' which gives you the choice to optimise charging up to 80% for better longevity of the battery life. You can change it to standard optimisation or none at all

FYI, it's not new. It was added in iOS 13.

I have iPhone 15 pro max, charging it stops at 80% I got the type c cord and 30 watt plug still same. 80% stops charging in setting for battery if Chang to 100% works but Apple told me that that will cut back life on battery but want it charged to 100% last longer when I’m on phone !

afsar196 wrote:

I want to know ,is there any problem if i change my phone 100%?

I'm late to this convo...but while there's not a "problem" if you charge to 100%, it will likely decrease your battery life.

For me, as soon as they gave the option to limit to 80%, I turned the feature ON and love it. Now, I can charge as often as I want, and my "maximum capacity" (in Battery > Battery Health) is still 100% while my wife's has gotten lower. So, I'm surprised anyone is turning that feature off...my phone can usually last 2 days on a charge even after only charging to 80%...so I'm happy to let my battery live longer.

After two years of constant charging, I'm betting my 80% charged will last longer than many people's 100% charge.