Apple Watch Ultra Features 76% Larger Battery Than Series 8

The Apple Watch Ultra features a 76% larger battery compared to the 45mm Series 8, according to newly uncovered specifications in a Chinese certification database.

apple watch ultra 2
The certification, spotted by MySmartPrice, reveals that the Apple Watch Ultra features a 542mAh battery. The 45mm Apple Watch Series 8 features a 308mAh battery, representing a 76% increase in battery size for the Apple Watch Ultra compared to the previous largest Apple Watch.

The documents also confirm that alongside the Apple Watch Series 8 featuring the same CPU as the Series 6 and 7, the new Apple Watch also shares the same battery size. The 41mm Series 8 features a battery capacity of 282mAh, while the Series 7 features a 284mAh battery. The minimal difference in battery size is unlikely to be noticeable. The 45mm Series 8 also shares the same battery size as the 45mm Series 7.

With the Apple Watch Series 8, Apple promises the same all-day battery life as previous generation models. With the Apple Watch Ultra, Apple says that users can expect up to 36 hours of normal use and up to 60 hours with Low Power mode enabled, offering the longest battery life ever in an Apple Watch.

Low Power Mode, which is available on all Apple Watch models supported by watchOS 9, extends battery life by disabling features such as background app refresh, the always-on display, background blood oxygen measurements, and more.

Related Roundup: Apple Watch Ultra 2
Related Forum: Apple Watch

Popular Stories

Apple CarPlay Ultra instrument cluster themes 01

Apple's CarPlay Ultra Is Here – Does Your iPhone Support It?

Thursday May 15, 2025 5:17 am PDT by
Apple's recently announced CarPlay Ultra promises a deeply integrated in-car experience, but not all iPhone users will be able to take advantage of the new feature. According to Apple's press release, CarPlay Ultra requires an iPhone 12 or later running iOS 18.5 or later. This means if you're using an iPhone 11, iPhone XR, or any older model, you'll need to upgrade your device to access...
Apple CarPlay Ultra instrument cluster themes 01

Apple's 'CarPlay Ultra' Experience Now Available

Thursday May 15, 2025 5:07 am PDT by
Apple today announced that its next-generation CarPlay experience, now dubbed "CarPlay Ultra" begins rolling out today, starting with Aston Martin vehicles. Subscribe to the MacRumors YouTube channel for more videos. CarPlay Ultra is now available with new Aston Martin vehicle orders in the U.S. and Canada. It will also be available for existing models that feature the brand's next-generation ...
CarPlay Ultra Climate Controls

Apple Says These Vehicle Brands Plan to Offer All-New CarPlay Ultra

Thursday May 15, 2025 8:13 am PDT by
Apple today announced the launch of CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. CarPlay Ultra features deep integration with a vehicle's instrument cluster and systems, built-in Radio and Climate apps, customizable widgets, and more. The interface is tailored to each vehicle model and automaker's identity, and drivers can also adjust...
iPhone 12 Made in India

Trump Tells Tim Cook to Stop Building iPhones in India

Thursday May 15, 2025 2:21 am PDT by
President Donald Trump has asked Apple CEO Tim Cook to halt the company's manufacturing expansion in India, in a potential disruption of Apple's plan to shift iPhone production away from China. "I had a little problem with Tim Cook yesterday," Trump said during his state visit to Qatar, according to Bloomberg. "He is building all over India." "They [India] have offered us a deal where...
apple music

Apple Music Gets New Transfer Tool to Make Switching From Spotify Easier

Wednesday May 14, 2025 5:17 pm PDT by
Apple this week introduced a new feature designed to allow prospective Apple Music users to import their saved music and playlists from third-party music services to Apple Music. The feature is either in an expanded testing phase or it has started rolling out, and it is available in Australia and New Zealand according to an Apple Support document. Signs of the transfer option first surfaced...
maxresdefault

Here's the First Real-World Look at Apple's CarPlay Ultra

Thursday May 15, 2025 5:52 am PDT by
The first videos of Apple's CarPlay Ultra experience are now available, providing a never-before-seen look at the long-anticipated iPhone-linked infotainment software. British automaker Aston Martin today shared the first video of Apple's CarPlay Ultra experience in-action, followed by a detailed walk-through of the CarPlay Ultra system on Top Gear's YouTube channel, which provides the...
vision pro video recording

WSJ: Some Apple Vision Pro Buyers 'Feel Total Regret'

Friday May 16, 2025 7:43 am PDT by
Apple's Vision Pro headset has left many early adopters expressing dissatisfaction over its weight, limited use cases, and sparse software ecosystem, according to a new article from The Wall Street Journal. In the year following the device's launch, user feedback suggests that it has failed to meet expectations for comfort, software support, and social acceptance. In interviews conducted by T...

Top Rated Comments

everlast3434 Avatar
35 months ago
Can’t wait to try this out while sitting in the couch, flipping through the channels, and drinking a beer! Lol
Score: 21 Votes (Like | Disagree)
MayaUser Avatar
35 months ago
nice battery but 3years old SoC on it...sry but they should place a new SoC at least in this Ultra
Score: 18 Votes (Like | Disagree)
DMG35 Avatar
35 months ago
I’m really excited to get this in and try it. Its big and exactly what I was hoping for.
Score: 17 Votes (Like | Disagree)
pauloregan Avatar
35 months ago
Does SOC mean 'same old crap'?
Score: 17 Votes (Like | Disagree)
MacWorld78 Avatar
35 months ago
"Apple Watch Series 8‌ featuring the same CPU as the Series 6 and 7" :rolleyes:
Score: 14 Votes (Like | Disagree)
boak Avatar
35 months ago

nice battery but 3years old SoC on it...sry but they should place a new SoC at least in this Ultra
That's how they are going to sell the next Ultra ;)
Score: 11 Votes (Like | Disagree)