Apple Watch Ultra Teardown Reveals Larger Battery, Improved Water Resistance, and More

iFixit today shared an Apple Watch Ultra teardown post and video, providing a closer look at the watch's internal design and components.


While the Apple Watch Ultra has four exposed pentalobe screws on the back case for quick access to the inside of the watch, iFixit said the device remains challenging to repair. For example, after removing the back case, iFixit said a gasket contributing to the Apple Watch Ultra's water resistance was immediately broken. In addition, accessing parts like the battery and Taptic Engine requires the difficult task of removing the display.

In line with a previous report, the teardown confirms that the Apple Watch Ultra is equipped with a 542 mAh battery, which is 76% larger than the Apple Watch Series 8's 308 mAh battery also shown. The teardown also provides a closer look at the Ultra's significantly larger speaker, which reviews said results in louder phone calls.

Apple Watch Ultra launched on Friday. Priced at $799, the high-end watch features a rugged design with a 49mm titanium case, a flat display, outdoors-themed bands, water resistance up to a depth of 100 meters, a customizable bright orange "Action" button, up to 60 hours of battery life with an upcoming low power setting, and more.

Related Roundup: Apple Watch Ultra 3
Related Forum: Apple Watch

Popular Stories

m5 macbook pro deal

Why You Shouldn't Buy the Next MacBook Pro

Tuesday February 10, 2026 4:27 pm PST by
Apple is planning to launch new MacBook Pro models as soon as early March, but if you can, this is one generation you should skip because there's something much better in the works. We're waiting on 14-inch and 16-inch MacBook Pro models with M5 Pro and M5 Max chips, with few changes other than the processor upgrade. There won't be any tweaks to the design or the display, but later this...
iOS 26

Apple Releases iOS 26.3 and iPadOS 26.3

Wednesday February 11, 2026 10:07 am PST by
Apple today released iOS 26.3 and iPadOS 26.3, the latest updates to the iOS 26 and iPadOS 26 operating systems that came out in September. The new software comes almost two months after Apple released iOS 26.2 and iPadOS 26.2. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. According to Apple's release notes, ...
Apple Logo Zoomed

Apple Expected to Launch These 10+ Products Over the Coming Months

Tuesday February 10, 2026 6:33 am PST by
It has been a slow start to 2026 for Apple product launches, with only a new AirTag and a special Apple Watch band released so far. We are still waiting for MacBook Pro models with M5 Pro and M5 Max chips, the iPhone 17e, a lower-cost MacBook with an iPhone chip, long-rumored updates to the Apple TV and HomePod mini, and much more. Apple is expected to release/update the following products...
iPhone 16e Bottom Crop

Apple Reportedly Unveiling a New iPhone Next Week

Tuesday February 10, 2026 1:51 pm PST by
Apple plans to announce the iPhone 17e on Thursday, February 19, according to Macwelt, the German equivalent of Macworld. The report said the iPhone 17e will be announced in a press release on the Apple Newsroom website, so do not expect an event for this device specifically. The iPhone 17e will be a spec-bumped successor to the iPhone 16e. Rumors claim the device will have four key...
Apple Logo Black

Apple Acquires New Database App

Wednesday February 11, 2026 6:44 am PST by
Apple acquired Canadian graph database company Kuzu last year, it has emerged. The acquisition, spotted by AppleInsider, was completed in October 2025 for an undisclosed sum. The company's website was subsequently taken down and its Github repository was archived, as is commonplace for Apple acquisitions. Kuzu was "an embedded graph database built for query speed, scalability, and easy of ...

Top Rated Comments

44 months ago

Sadly looks like this might be the worst watch yet re: battery replacement. $400/year, then to the landfill. Oh well, I am sticking with my $16 Casio (whose battery is easily replaced using rear case screws), and my Luddite approach to sports/fitness.
Two cans and string can replace your iPhone.
Score: 31 Votes (Like | Disagree)
44 months ago
This guy is clueless lol. Calls GPS on Apple Watches “abysmal”, doesn’t understand how the siren works, and worst of all damages the screen by prying it open with metal tool and not using suction cups, then blames it on the watch.
Score: 28 Votes (Like | Disagree)
jarman92 Avatar
44 months ago
This guy is the worst. His obnoxious digs at Apple are very distracting and often completely wrong. They should bring back the cute dorky guy with the long hair.
Score: 12 Votes (Like | Disagree)
44 months ago

Sadly looks like this might be the worst watch yet re: battery replacement. $400/year, then to the landfill.
I think this is the wrong take. The larger battery means the watch will experience fewer charge cycles, and less time at those high and low states that lithium batteries don’t like. There is also the better battery management added in recent years.

There is a good chance the Ultra will still perform well in 4 years.
Score: 11 Votes (Like | Disagree)
dohspc Avatar
44 months ago
The battery is very good on Ultra. Before I would be down to 20-30% after a 75 min workout outside streaming music on cellular on AW7 and I started at 100%. Now on Ultra I have around 75% remaining starting at 100%. The watch is twice as heavy though lol.
Score: 11 Votes (Like | Disagree)
44 months ago
It will be great when this thing evolves over the years to go more than a week on a single charge. I’m hoping apple will be pushing for that long term
Score: 9 Votes (Like | Disagree)