iPhone 15 Models Feature New Setting to Strictly Prevent Charging Beyond 80%

All of the iPhone 15 and iPhone 15 Pro models feature a new battery health setting that prevents the devices from charging beyond 80% at all times when enabled, as confirmed by The Verge's Allison Johnson during a Q&A session today.

iPhone 15 Pro Lineup Feature
The new setting is separate from the pre-existing Optimized Battery Charging feature on iPhones, which intelligently delays charging past 80% until a more appropriate time by learning the device's daily charging routine. When the 80% hard limit is enabled, the iPhone will never charge past that point whatsoever.

On all iPhone 15 models, there are three options under Settings → Battery → Battery Health & Charging → Charging Optimization:

  • Optimized Battery Charging
  • 80% Limit
  • None

As with Optimized Battery Charging, the 80% hard limit can improve an iPhone battery's lifespan by reducing the time that the battery is fully charged.

The new setting was previously discovered in iOS 17 code by software researcher Steve Moser.

Apple says all of the iPhone 15 models have the same battery life as iPhone 14 models. The devices launch this Friday.

Related Roundup: iPhone 15
Related Forum: iPhone

Popular Stories

iPadOS 26 App Windowing

Apple Explains Why iPads Don't Just Run macOS

Friday June 13, 2025 7:46 am PDT by
iPadOS 26 allows iPads to function much more like Macs, with a new app windowing system, a swipe-down menu bar at the top of the screen, and more. However, Apple has stopped short of allowing iPads to run macOS, and it has now explained why. In an interview this week with Swiss tech journalist Rafael Zeier, Apple's software engineering chief Craig Federighi said that iPadOS 26's new Mac-like ...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday June 12, 2025 8:58 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
Logitech Logo Feature

Logitech Announces Two New Accessories for WWDC

Friday June 13, 2025 7:22 am PDT by
Alongside WWDC this week, Logitech announced notable new accessories for the iPad and Apple Vision Pro. The Logitech Muse is a spatially-tracked stylus developed for use with the Apple Vision Pro. Introduced during the WWDC 2025 keynote address, Muse is intended to support the next generation of spatial computing workflows enabled by visionOS 26. The device incorporates six degrees of...
iOS 26 Screens

Here Are All the iOS 26 Features That Require iPhone 15 Pro or Newer

Thursday June 12, 2025 4:53 am PDT by
With iOS 26, Apple has introduced some major changes to the iPhone experience, headlined by the new Liquid Glass redesign that's available across all compatible devices. However, several of the update's features are exclusive to iPhone 15 Pro and iPhone 16 models, since they rely on Apple Intelligence. The following features are powered by on-device large language models and machine...
apple beta 26 lineup

Apple 'Sherlocked' These Apps at WWDC 2025

Wednesday June 11, 2025 7:14 am PDT by
Apple at WWDC previewed a bunch of new features coming in its updated operating systems, but certain changes will have been met with dismay by third-party developers who already offer apps with equivalent or similar features. In other words, their product has been "sherlocked" by Apple. When Apple creates an app or a feature that has functionality found in a third-party app, it is referred...
maxresdefault

Everything Apple Announced at WWDC 2025 in 10 Minutes

Monday June 9, 2025 5:21 pm PDT by
At today's WWDC 2025 keynote event, Apple unveiled a new design that will inform the next decade of iOS, iPadOS, and macOS development, so needless to say, it was a busy day. Apple also unveiled a ton of new features for the iPhone, an overhauled Spotlight interface for the Mac, and a ton of updates that make the iPad more like a Mac than ever before. Subscribe to the MacRumors YouTube channel ...
iOS 26 on Three iPhones

Hate iOS 26's Liquid Glass Design? Here's How to Tone It Down

Wednesday June 11, 2025 4:22 pm PDT by
iOS 26 features a whole new design material that Apple calls Liquid Glass, with a focus on transparency that lets the content on your display shine through the controls. If you're not a fan of the look, or are having trouble with readability, there is a step that you can take to make things more opaque without entirely losing out on the new look. Apple has multiple Accessibility options that ...
CarPlay Liquid Glass Dark

Apple to Let iPhone Users Watch Videos on CarPlay Screen While Parked

Thursday June 12, 2025 6:16 am PDT by
Apple this week announced that iPhone users will soon be able to watch videos right on the CarPlay screen in supported vehicles. iPhone users will be able to wirelessly stream videos to the CarPlay screen using AirPlay, according to Apple. For safety reasons, video playback will only be available when the vehicle is parked, to prevent distracted driving. The connected iPhone will be able to...

Top Rated Comments

atiffarooq Avatar
23 months ago
I mean, I totally get why this can’t be rolled out to older models of the iPhone, especially the iPhone 14 range as that’s so inferior to the 15.

Normal Apple BS and hopefully they make it available to those of us who won’t be getting the 15 this year.
Score: 115 Votes (Like | Disagree)
netsped Avatar
23 months ago

... how is this iPhone 15 only...
It needs the new and revolutionary B(s)1 chip.
Score: 88 Votes (Like | Disagree)
Obioban Avatar
23 months ago
... how is this iPhone 15 only...
Score: 87 Votes (Like | Disagree)
Franjelisco Avatar
23 months ago
Why is this limited to the new models only? Given the OS is capable of stopping charging when it's overheating, comes in contact with liquid etc. since iPhone 6-7
Score: 72 Votes (Like | Disagree)
GDF Avatar
23 months ago
What is the point of any battery if charging past 80% causes excessive wear and tear. Same with EV’s. Just plain dump. I want the full capacity always, so develop battery technology that does that.
Score: 58 Votes (Like | Disagree)
JRoDDz Avatar
23 months ago
So you are basically throwing away 20% of your charge life for some extra charge cycles a few years down the road? I don't get it.
Score: 49 Votes (Like | Disagree)