Battery limit bug?

[Sptzz]

I've got my battery limit set to 85%, has been since I got the iphone 16p.

Yesterday I noticed that out of nowhere, the search button showed up on my homescreen. I know this was never there and I've never seen the option? But now the option was there and I had to go in and turn it off. This morning, I was charging my phone on wirelessly, and suddenly noticed it went OVER my defined limit. This hasn't happened before.

I've been on 18.0.1 since it came out. What's going on here?

 

[BugeyeSTI]

Every once and awhile the phone will charge to 100%. It happens randomly. This is from Apple support website:

Improve battery lifespan with Charge Limit​

With iPhone 15 models and later, if the charge limit is 100 percent, you can also turn on Optimized Battery Charging. Your iPhone has these settings by default.

Your iPhone will charge to within a few percentage points of your chosen limit and then stop charging. If the battery charge level drops more than 5 percent while connected to power, charging will resume, again charging to within a few points of your chosen limit.

If iOS determines that a charge limit will help preserve your battery's lifespan, you'll see a recommendation. For example, you might see "Based on your iPhone habits, a charge limit of 95% is recommended to help preserve your battery."

If you have Charge Limit set to less than 100 percent, your iPhone will occasionally charge to 100 percent to maintain accurate battery state-of-charge estimates.

 

[russell_314]

If you have Charge Limit set to less than 100 percent, your iPhone will occasionally charge to 100 percent to maintain accurate battery state-of-charge estimates.

This is very interesting. I’m guessing it’s similar to the Tesla LFP battery that needs to be charged occasionally to 100% to maintain accurate readings of the battery percentage. Maybe the iPhone battery chemistry is similar? It’s supposed to be safer.

Sorry, I find these nerdy details very interesting 🤦‍♂️😂

 

[Sptzz]

This is very interesting. I’m guessing it’s similar to the Tesla LFP battery that needs to be charged occasionally to 100% to maintain accurate readings of the battery percentage. Maybe the iPhone battery chemistry is similar? It’s supposed to be safer.

Sorry, I find these nerdy details very interesting 🤦‍♂️😂

Yeah, interesting. It did go to 100% and now it doesn't anymore. So it was definitely that!

Funny how you can do that on iOS but not on MacOS