Apple Watch Series 9 and Ultra 2 Battery Capacities Revealed in Regulatory Database
Apple does not list battery capacities for the new Apple Watch Series 9 and Ultra 2 models, but MacRumors has discovered this information in a Chinese regulatory database today, and we have outlined our findings below.

According to the database, which only provides Apple model numbers instead of product names, the 41mm and 45mm Apple Watch Series 9 models appear to be equipped with 282 mAh and 308 mAh batteries, respectively. These capacities are unchanged compared to the equivalent Apple Watch Series 8 models, which makes sense given that Apple says the Series 9 models have the same 18-hour battery life as Series 8 models.
As for the Apple Watch Ultra 2, it appears to be equipped with a 564 mAh battery, which is approximately 4% larger than the 542 mAh battery in the original Apple Watch Ultra. However, Apple says the Ultra 2 has the same 36-hour battery life as the original Ultra, likely due to it having a brighter display and other new features.
A recap of the Apple Watch battery capacities listed in the database:
Apple Watch |
Battery Capacity |
Apple Watch Series 9 (41mm) |
282 mAh |
Apple Watch Series 8 (41mm) |
282 mAh |
Apple Watch Series 9 (45mm) |
308 mAh |
Apple Watch Series 8 (45mm) |
308 mAh |
Apple Watch Ultra 2 |
564 mAh |
Apple Watch Ultra |
542 mAh |
New features for both the Apple Watch Series 9 and Ultra 2 include brighter displays, a faster S9 chip, a new "Double Tap" gesture for interacting with the watches without touching the screen, and more. Both new models have been available to order since Tuesday and will begin arriving to customers and launch in stores on Friday, September 22.
MacRumors also found the same battery capacities for what appears to be the iPhone 15 Plus, iPhone 15 Pro, and iPhone 15 Pro Max as were reported earlier today. We were unable to find a listing for the regular iPhone 15 battery.
Popular Stories
Apple may have canceled the super scratch resistant anti-reflective display coating that it planned to use for the iPhone 17 Pro models, according to a source with reliable information that spoke to MacRumors.
Last spring, Weibo leaker Instant Digital suggested Apple was working on a new anti-reflective display layer that was more scratch resistant than the Ceramic Shield. We haven't heard...
This week marks the 10th anniversary of the Apple Watch, which launched on April 24, 2015. Yesterday, we recapped features rumored for the Apple Watch Series 11, but since 2015, the Apple Watch has also branched out into the Apple Watch Ultra and the Apple Watch SE, so we thought we'd take a look at what's next for those product lines, too.
2025 Apple Watch Ultra 3
Apple didn't update the...
Apple has completed Engineering Validation Testing (EVT) for at least one iPhone 17 model, according to a paywalled preview of an upcoming DigiTimes report.
iPhone 17 Air mockup based on rumored design
The EVT stage involves Apple testing iPhone 17 prototypes to ensure the hardware works as expected. There are still DVT (Design Validation Test) and PVT (Production Validation Test) stages to...
Apple will likely manufacture its 20th anniversary iPhone models in China, despite broader efforts to shift production to India, according to Bloomberg's Mark Gurman.
In 2027, Apple is planning a "major shake-up" for the iPhone lineup to mark two decades since the original model launched. Gurman's previous reporting indicates the company will introduce a foldable iPhone alongside a "bold"...
While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the ultra-thin device.
Overall, the iPhone 17 Air sounds like a mixed bag. While the device is expected to have an impressively thin and light design, rumors indicate it will have some compromises compared to iPhone 17 Pro models, including only a single rear camera, a...
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices.
Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025:
Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
Apple is preparing to launch a dramatically thinner iPhone this September, and if recent leaks are anything to go by, the so-called iPhone 17 Air could boast one of the most radical design shifts in recent years.
iPhone 17 Air dummy model alongside iPhone 16 Pro (credit: AppleTrack)
At just 5.5mm thick (excluding a slightly raised camera bump), the 6.6-inch iPhone 17 Air is expected to become ...