Apple Watch Ultra 2 Advertised With 72-Hour Battery Life in Low Power Mode, But There's a Catch
While the Apple Watch Ultra 2 is advertised with up to 72 hours of battery life in Low Power Mode, compared to 60 hours for the original Ultra model, there is a catch.

According to fine print on Apple's website, the testing parameters for the Ultra 2 in Low Power Mode were different than those for the original Ultra.
The fine print for the original Apple Watch Ultra said:
Multi-day adventure battery life is based on the following use while in Low Power Mode and with workout settings enabled for fewer GPS and heart rate readings: 15 hours of hiking workout, over 600 time checks, 35 minutes of app use, 3 minutes of talk, and 15 hours of sleep tracking, over the course of 60 hours.
The fine print for the Apple Watch Ultra 2 says:
Battery life in Low Power Mode is based on the following use: 360 time checks, 360 notifications, 180 minutes of app use, and two 60-minute workouts with music playback from Apple Watch via Bluetooth, over the course of 72 hours.
Given these very different testing parameters, customers should keep in mind that the Ultra 2 does not simply offer 12 hours more battery life than the original Ultra in Low Power Mode, which is something that could be easily misconstrued.
It's possible the original Ultra would also get around 72 hours of battery life in Low Power Mode based on the new testing parameters, but this is not proven yet.
We've reached out to Apple with a request for comment, and we'll update this story if the company provides a response.
Popular Stories
An iPhone 17 announcement is a dead cert for September 2025 – Apple has already sent out invites for an "Awe dropping" event on Tuesday, September 9 at the Apple Park campus in Cupertino, California. The timing follows Apple's trend of introducing new iPhone models annually in the fall.
At the event, Apple is expected to unveil its new-generation iPhone 17, an all-new ultra-thin iPhone 17...
Apple and Samsung have reportedly issued cease-and-desist notices to Xiaomi in India for an ad campaign that directly compares the rivals' devices to Xiaomi's products. The two companies have threatened the Chinese vendor with legal action, calling the ads "disparaging."
Ads have appeared in local print media and on social media that take pot shots at the competitors' premium offerings. One...
Following the announcement of Apple's upcoming "Awe dropping" event, on this week's episode of The MacRumors Show we talk through all of the new accessories rumored to debut alongside the iPhone 17 lineup.
Subscribe to The MacRumors Show YouTube channel for more videos
We take a closer look at Apple's invite for "Awe dropping;" the design could hint at the iPhone 17's new thermal system with ...
Apple is expected to unveil the iPhone 17 series on Tuesday, September 9, and last-minute rumors about the devices continue to surface.
The latest info comes from a leaker known as Majin Bu, who has shared alleged images of Apple's Clear Case for the iPhone 17 Pro and Pro Max, or at least replicas.
Image Credit: @MajinBuOfficial
The images show three alleged changes compared to Apple's iP...