iFixit: iPhone XS Has 'Notched' Battery and iPhone XS Max Has Apple-Designed Power Management Chip [Updated]

The repair experts at iFixit have shared teardowns of the iPhone XS and iPhone XS Max, providing a look inside the latest models.

ifixit teardown iphone xs iphone xs max

iPhone XS on left and iPhone XS Max on right via iFixit

While the iPhone XS and iPhone XS Max have improved IP68-rated water resistance, iFixit says it could not find any obvious evidence of increased waterproofing, with the SIM tray gasket and other seals looking more or less the same. Dutch repair website FixjeiPhone had found the iPhone XS was a bit harder to open.

After removing the displays, iFixit uncovered a few differences with the iPhone XS Max compared to the iPhone XS, including a resized Taptic Engine and an extended logic board, with one of the display connectors moved to the bottom. It appears the iPhone XS Max also has a slightly louder earpiece for phone calls.

The teardown corroborates that the iPhone XS has a new single-cell L-shaped battery, while the iPhone XS Max battery remains two cells. As uncovered in Chinese regulatory filings, the iPhone XS and iPhone XS Max have battery capacities of 2,658 mAh at 3.81V and 3,174 mAh at 3.80V respectively.

ifixit iphone xs xs max batteries

iPhone XS Max on left and iPhone XS on right via iFixit

Since the L-shaped batteries have six sides, rather than four like a rectangle, iFixit says Apple has "notched" the internal corners of the batteries in the iPhone XS to prevent undue stress from thermal expansion.

"This dramatic shift opens up a lot of design possibilities, but the large notch is responsible for the decrease in capacity relative to the X," its teardown email says. "Only time will tell how this new cell performs with age."

Moving on to the logic board, there is a new Apple-branded power management chip in the iPhone XS Max. Reports had suggested Apple would start using its own power management chip in at least a portion of its 2018 iPhones, as it gradually reduces its dependance on Dialog Semiconductor.

iphone xs logic board

Apple-designed power management chip labeled in green via iFixit

The teardown does not indicate whether the gigabit-class LTE modems in the latest iPhones are supplied by Intel and/or Qualcomm.

iFixit confirms the wide-angle sensor size has been increased by 32 percent in the iPhone XS and iPhone XS Max. Pixel size has also been bumped, providing better low-light performance and contributing to the new "Smart HDR" feature.

iFixit gives the iPhone XS and iPhone XS Max an overall repairability score of 6/10, with 10 being a perfect score. The repair experts say display and battery repairs remain a priority in the iPhone's design, but the all-glass design means the entire chassis must be replaced if the back glass cracks.

Update: A previous version of this article said both the iPhone XS and iPhone XS Max have "notched" battery designs, but iFixit says this is only true for the iPhone XS. The article has been corrected.

Related Forum: iPhone

Top Rated Comments

alpi123 Avatar
51 months ago
I wouldn't call the rounded corners a "notch".
Score: 5 Votes (Like | Disagree)
neilpatel2009 Avatar
51 months ago
I wouldn't call the rounded corners a "notch".
I believe this is the notch ifixit is talking about.

Score: 5 Votes (Like | Disagree)
827538 Avatar
51 months ago
'The teardown does not indicate whether the gigabit-class LTE modems in the latest iPhones are supplied by Intel and/or Qualcomm.'

Yes it does, they use Intel modems. Did you read the breakdown?
Score: 3 Votes (Like | Disagree)
greg5green Avatar
51 months ago
The teardown does not indicate whether the gigabit-class LTE modems in the latest iPhones are supplied by Intel and/or Qualcomm.
What kind of monster tears the phone down before turning it on and taking a bunch of screenshots from the Field Test app?
Score: 3 Votes (Like | Disagree)
csurfr Avatar
51 months ago
Too bad Apple never specifies the sensor size in their technical specifications. Would make the Xs camera stand out more. As it is currently, people might think there weren’t many improvements.
Are you referring the the “30% larger.....” that they spoke about in the keynote?
Score: 3 Votes (Like | Disagree)
PickUrPoison Avatar
51 months ago
That is not sensor size, that is pixel size
Right, but bigger pixels+same number of pixels=bigger sensor size. Pixels growing 1.2u—>1.4u is >30% larger. Apple stated something like 32% larger sensor size to Gruber iirc.
Score: 2 Votes (Like | Disagree)

Popular Stories

iPhone 14 Pro Lineup Feature Purple

Apple Planning to Hold iPhone 14 Event on September 7

Wednesday August 17, 2022 9:51 am PDT by
Apple is aiming to hold its first fall event on Wednesday, September 7, reports Bloomberg's Mark Gurman. The event will focus on the iPhone 14 models and the Apple Watch Series 8. The standard iPhone 14 models are expected to get few changes, but the iPhone 14 Pro models will include updated camera technology, the removal of the notch in favor of a pill-shaped and hole-punch cutout, an A16...
iOS 15

Apple Releases iOS 15.6.1 and iPadOS 15.6.1 With Bug Fixes

Wednesday August 17, 2022 9:50 am PDT by
Apple today released iOS and iPadOS 15.6.1, minor updates to the iOS and iPadOS 15 operating systems initially released in September 2021. iOS 15.6.1 and iPadOS 15.6.1 come a month after Apple released iOS 15.6 and iPadOS 15.6 with new Live Sports features and bug fixes. The iOS 15.6.1 and iPadOS 15.6.1 updates can be downloaded for free and the software is available on all eligible devices...
10th Generation iPad Render

10th-Generation iPad With Major Design Changes Reportedly in Production Ahead of September Launch

Monday August 15, 2022 8:02 pm PDT by
Apple's rumored 10th-generation iPad is currently in production and will feature "major" design changes, according to a report from Taiwanese website DigiTimes. A mockup of the potential 10th-generation iPad design by Renders By Shailesh The report did not provide any specific details about the 10th-generation iPad's new design, but rumors suggest the device will feature a larger 10.5-inch...
airpods pro black background

AirPods Pro 2: Five New Features and Improvements to Expect

Sunday August 14, 2022 3:28 pm PDT by
Apple's second-generation AirPods Pro are finally nearing launch, with a release expected later this year. If you are considering upgrading to the new AirPods Pro once they are released, keep reading for a list of five new features to expect. In addition to all-new features, the second-generation AirPods Pro will likely adopt some features added to the standard AirPods last year. H2 Chip ...
Apple Watch Series 3 v 8 1

Apple Watch Series 3 vs. Apple Watch Series 8: 20 Major New Features and Changes for Customers Upgrading

Tuesday August 16, 2022 6:52 am PDT by
It's crazy to think about, but next month will mark five years since Apple announced the Apple Watch Series 3. Despite being a severely antiquated smartwatch, the Series 3 has remained at the bottom of Apple's lineup for $199. Suppose you're still holding on to your Apple Watch Series 3. In that case, this article will list all the major new features and changes you'll get if you decide to...
ios 16 lock screen feature2

Apple Seeds Sixth Betas of iOS 16 and iPadOS 16 to Developers [Update: Public Beta Available]

Monday August 15, 2022 10:04 am PDT by
Apple today seeded the sixth betas of upcoming iOS 16 and iPadOS 16 updates to developers for testing purposes, with the updates coming a week after Apple released the fifth developer betas. Registered developers can download the iOS and iPadOS 16 profiles from the Apple Developer Center, and once installed, the betas will be available over the air. iOS 16 introduces a revamped Lock...