Smart Battery Case for iPhone XS Appears to Be Compatible With iPhone X

Apple yesterday debuted new Smart Battery Cases for the iPhone XS, XS Max, and XR, and review units are in the hands of members of the media and some lucky people who received early deliveries.

Many ‌iPhone‌ X users have been wondering if the ‌iPhone‌ XS Smart Battery Case will work with the older model given that the two devices are nearly identical in design, and the answer appears to be yes, though there is some uncertainty.

iphone xs max battery case
This morning, iMore's Rene Ritchie put an ‌iPhone‌ X running iOS 12.1.2 in an ‌iPhone‌ XS ‌Smart Battery Case‌ and received an error suggesting the ‌iPhone‌ X was not compatible with the case.

He updated the ‌iPhone‌ X to iOS 12.1.3, however, and was able to get the ‌iPhone‌ X to charge in the ‌iPhone‌ XS ‌Smart Battery Case‌. He also now says that the ‌iPhone‌ X will charge with the Battery Case if the incompatibility popup is dismissed.


A MacRumors reader was also able to get the ‌iPhone‌ X to charge in an ‌iPhone‌ XS ‌Smart Battery Case‌, and Chris Welch of The Verge said in his testing, the ‌iPhone‌ X was able to charge an ‌iPhone‌ X running iOS 12.1.2 in an ‌iPhone‌ XS Max ‌Smart Battery Case‌.


So it appears, based on this limited amount of testing, that the ‌iPhone‌ X is going to charge in an ‌iPhone‌ XS ‌Smart Battery Case‌, though there could be some compatibility issues on iOS 12.1.2. If the case doesn't charge the ‌iPhone‌ X, as Ritchie suggested, you can restart the ‌iPhone‌ or update to iOS 12.1.3 to get it working.

It is worth noting that while the ‌iPhone‌ X may charge in the ‌iPhone‌ XS Battery Case, the fit is imprecise. The speaker and microphone holes do not line up, and the camera cutout is a bit off.

Apple's Smart Battery Cases for the ‌iPhone‌ XS, XS Max, (and presumably XR), feature 10.1Whr batteries that extend the life of each ‌iPhone‌.

The ‌iPhone‌ XS Max normally offers up to 25 hours talk time, 15 hours of internet use, and 15 hours of video playback, which is extended to 37 hours of talk time, 20 hours of internet, and 25 hours of video playback with the ‌Smart Battery Case‌.

The ‌iPhone‌ XS alone features up to 20 hours of talk time, 12 hours of internet use, and 14 hours of video playback, which is extended to 33 hours of talk time, 21 hours of internet use, and 25 hours of video playback with the ‌Smart Battery Case‌.

The ‌iPhone‌ XR features up to 25 hours of talk time, 15 hours of internet use, and 16 hours of video playback, which is extended to 39 hours of talk time, 22 hours of internet use, and 27 hours of video playback.

The Smart Battery Cases are priced at $129 and can be purchased from the Apple website.

Related Forum: iPhone

Popular Stories

Apple Logo Zoomed

Tim Cook Teases Plans for Apple's Upcoming 50th Anniversary

Thursday February 5, 2026 12:54 pm PST by
Apple turns 50 this year, and its CEO Tim Cook has promised to celebrate the milestone. The big day falls on April 1, 2026. "I've been unusually reflective lately about Apple because we have been working on what do we do to mark this moment," Cook told employees today, according to Bloomberg's Mark Gurman. "When you really stop and pause and think about the last 50 years, it makes your heart ...
wwdc sans text feature

Apple Rumored to Announce New Product on February 19

Thursday February 5, 2026 12:22 pm PST by
Apple plans to announce the iPhone 17e on Thursday, February 19, according to Macwelt, the German equivalent of Macworld. The report, citing industry sources, is available in English on Macworld. Apple announced the iPhone 16e on Wednesday, February 19 last year, so the iPhone 17e would be unveiled exactly one year later if this rumor is accurate. It is quite uncommon for Apple to unveil...
Finder Siri Feature

Why Apple's iOS 26.4 Siri Upgrade Will Be Bigger Than Originally Promised

Friday February 6, 2026 3:06 pm PST by
In the iOS 26.4 update that's coming this spring, Apple will introduce a new version of Siri that's going to overhaul how we interact with the personal assistant and what it's able to do. The iOS 26.4 version of Siri won't work like ChatGPT or Claude, but it will rely on large language models (LLMs) and has been updated from the ground up. Upgraded Architecture The next-generation...
iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
While the iOS 26.3 Release Candidate is now available ahead of a public release, the first iOS 26.4 beta is likely still at least a week away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
iphone 17 pro dark blue 1

iPhone 18 Pro Max Rumored to Deliver Next-Level Battery Life

Friday February 6, 2026 5:14 am PST by
The iPhone 18 Pro Max will feature a bigger battery for continued best-in-class battery life, according to a known Weibo leaker. Citing supply chain information, the Weibo user known as "Digital Chat Station" said that the iPhone 18 Pro Max will have a battery capacity of 5,100 to 5,200 mAh. Combined with the efficiency improvements of the A20 Pro chip, made with TSMC's 2nm process, the...

Top Rated Comments

beerfish89 Avatar
92 months ago
As someone who owned the X (upgraded to the XS), this is unbelievable.

I cannot understand the rationale for the software block of this. If someone is willing to spend $129 on it and they’re a X owner, I just cannot fathom why this makes any sense.
It does work and charge on an iPhone X. Working perfect on mine. Sound is just as loud as before.


Attachment Image

Attachment Image

Attachment Image
Score: 25 Votes (Like | Disagree)
RamGuy Avatar
92 months ago
Just buy a mophie then
The issue with non-Apple Battery Cases is the fact that they work as glorified battery packs and chargers. Your phone has no real clue that you are utilising a Battery Case.

Why is this a issue? Well because there are numerous things your iPhone will do only when it's connected to power. It saves a lot of power hungry tasks by default to only be done when it's connected to a charger.

Your phone is automatically in a more power hungry state by default when you are connected to a charger. This is not a issue with the Apple Smart Battery Case because it's directly integrated with iOS. With this case your phone knows it's just a secondary battery and it will behave accordingly.

When utilising battery cases from Mophie and other brands it will simply behave like a regular charge. Those cases have become smarter so they won't completely overload your iPhone's battery by continuously provide charge/power as long as the case's battery still have juice let of it but it will still trick your phone into believing you are connected to a wall outlet and behave accordingly reducing the potential battery life of the case drastically compared to have it all behaves with the Apple Smart Battery Case.
Score: 15 Votes (Like | Disagree)
rti92391 Avatar
92 months ago
As someone who owned the X (upgraded to the XS), this is unbelievable.

I cannot understand the rationale for the software block of this. If someone is willing to spend $129 on it and they’re a X owner, I just cannot fathom why this makes any sense.
Score: 14 Votes (Like | Disagree)
magicschoolbus Avatar
92 months ago
So a guy on Reddit cuts off an iPhone 7 case and plugs it into the X and it works - Apple releases a case that fits and should work, but add software to make it not work.

The days of my patience with Cook and Co's new Apple are running thin.
Score: 10 Votes (Like | Disagree)
kiensoy Avatar
92 months ago
The iPhone X set the path for the next 10 years, said Tim Cook, but discontinued it a year later and seems to not support it anymore. Early adopter issues.
Score: 9 Votes (Like | Disagree)
ryanwarsaw Avatar
92 months ago
Out of luck? This saves X users from buying junk.
Score: 7 Votes (Like | Disagree)