Battery Likely for Upcoming Apple Watch Series 6 Filed in Certification Listings

A battery likely for the upcoming Apple Watch Series 6 has been filed at the Korea Testing and Research Institute and discovered by a Twitter user @yabhishekhd.

YU10448 20011 1

Certification for a 1.17Wh battery with a capacity of 303.8mAh was issued on June 23 by the KTR, a Korean regulatory body that approves and tests new hardware ahead of public sale.

The battery seems to be destined for a future Apple Watch, given the shape, capacity, and model number of A2327. The current Apple Watch Series 5 has a 296mAh battery, a similar model number of A2181, and is visually identical. The battery is also listed in the filing as for "fitness," which would be an appropriate categorization for Apple Watch.

A larger 303.8mAh in a new Apple Watch would offer a larger capacity than in previous generations. This could be facilitated by the removal of the Force Touch technology layer, which was made defunct in WatchOS 7. Without this component in future Apple Watches, internal space could be made available for a slightly larger battery.

Apple claims that Apple Watch Series 5 offers an 18 hour battery life, but since this new battery is only slightly larger, it would be unlikely for the Series 6 battery life to be considerably better. Any significant battery life improvements would be more likely to come from improved power efficiency rather than a larger battery.

Earlier this week, it was rumored that Apple Watch Series 6 could feature blood oxygen monitoring, which could consume more power and account for the need for a larger battery.

‌Apple Watch‌ Series 6 models are expected for a fall launch, and are rumored to feature faster performance, better water resistance, and improved wireless transmission for faster Wi-Fi and cellular speeds.

Related Roundup: Apple Watch 11
Buyer's Guide: Apple Watch (Buy Now)

Popular Stories

2024 iPhone Boxes Feature

Apple Adjusts Trade-In Values for iPhones, iPads, Macs, and More

Thursday November 6, 2025 11:12 am PST by
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store. The charts below provide an overview of Apple's current and previous trade-in values in the U.S., according to its website. Maximum values for most devices either decreased or saw no change, but the iPad Air received a slight bump. ...
Liquid Glass General Feature

Apple Shares Liquid Glass Design Gallery

Thursday November 6, 2025 2:45 pm PST by
Apple is promoting the new Liquid Glass design in iOS 26, showing off the ways that third-party developers are embracing the aesthetic in their apps. On its developer website, Apple is featuring a visual gallery that demonstrates how "teams of all sizes" are creating Liquid Glass experiences. The gallery features examples of Liquid Glass in apps for iPhone, iPad, Apple Watch, and Mac. Apple...
airtag purple

Apple's Website Lists AirTag 4-Pack at Shockingly Low Price [Updated]

Friday November 7, 2025 6:40 am PST by
Apple's online store in the U.S. is suddenly offering a pack of four AirTags for just $29, which is the same price as a single AirTag. This is likely a pricing error, and it is unclear if orders will be fulfilled. Apple has not discounted the AirTag four-pack in any other countries that we checked. Delivery estimates are already pushing into late November to early December, suggesting...
Early Black Friday Deals 1

The Best Early Black Friday Apple Deals on AirPods, Apple Watch, iPad, and More

Saturday November 8, 2025 6:16 am PST by
We're officially in the month of Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When ...
iOS 26

iOS 26.1 Available Now With These 8 New Features

Monday November 3, 2025 5:54 am PST by
Following more than a month of beta testing, Apple released iOS 26.1 on Monday, November 3. The update includes a handful of new features and changes, including the ability to adjust the look of Liquid Glass and more. Below, we outline iOS 26.1's key new features. Liquid Glass Toggle iOS 26.1 lets you choose your preferred look for Liquid Glass. In the Settings app, under Display...
ikea smart home devices

IKEA Debuts 21 HomeKit-Compatible Smart Bulbs, Sensors, and Controls

Thursday November 6, 2025 4:08 pm PST by
IKEA today announced the upcoming launch of 21 new Matter-compatible smart home products that will be able to interface with HomeKit and the Apple Home app. There are sensors, lights, and control options, all of which will be reasonably priced. Some of the products are new, while some are updates to existing lines that IKEA previously offered. There are a series of new smart bulbs that are...
Apple fitness plus feature

Future of Apple Fitness+ 'Under Review'

Sunday November 9, 2025 5:30 am PST by
The future of Apple Fitness+ is "under review" amid a reorganization of the service, according to Bloomberg's Mark Gurman. In the latest edition of his "Power On" newsletter, Gurman said that Apple Fitness+ remains one of the company's "weakest digital offerings." The service apparently suffers from high churn and little revenue. Nevertheless, Fitness+ has a small, loyal fanbase that...
maxresdefault

In-Depth iPhone Battery Experiment Pits Slow Charging Against Fast Charging

Friday November 7, 2025 1:19 pm PST by
HTX Studio this week shared the results from a six-month battery test that compared how fast charging and slow charging can affect battery life over time. Using six iPhone 12 models, the channel set up a system to drain the batteries from five percent and charge them to 100 percent over and over again. Three were fast charged, and three were slow charged. Another set of iPhones underwent...
apple watch se 3 always on

Apple to Remove iPhone-Apple Watch Wi-Fi Sync in EU With iOS 26.2

Thursday November 6, 2025 4:37 am PST by
Apple in iOS 26.2 will disable automatic Wi-Fi network syncing between iPhone and Apple Watch in the European Union to comply with the bloc's regulations, suggests a new report. Normally, when an iPhone connects to a new Wi-Fi network, it automatically shares the network credentials with the paired Apple Watch. This allows the watch to connect to the same network independently – for...

Top Rated Comments

reallynotnick Avatar
69 months ago
That's 2.635% larger for those who are curious.
Score: 17 Votes (Like | Disagree)
Sebosz Avatar
69 months ago
Without this component in future Apple Watches, internal space could be made available for a slightly larger battery.
Have you actually seen the size of the Force Touch sensor? It has no impact on battery size. It's a thin, elastic cable around the display.


Attachment Image
Score: 15 Votes (Like | Disagree)
mnsportsgeek Avatar
69 months ago

It’s really 2.5 days with regular use honestly. Anyone seeing only 1 day is using GPS and cellular a ton. I find the battery life to be more than adequate.
Mine is usually around 50% when I go to bed. I wouldn’t get through a 2nd day. I don’t consider myself a heavy user, but I’m not going to turn off useful features to try and squeeze a 2nd day of battery life out. If I wanted to do that, I’d buy a watch with fewer features.
Score: 7 Votes (Like | Disagree)
QuarterSwede Avatar
69 months ago

Well that’s a relief. I was gonna be jealous if I had bought the last generation of 1 day battery life.
It’s really 2.5 days with regular use honestly. Anyone seeing only 1 day is using GPS and cellular a ton. I find the battery life to be more than adequate.
Score: 5 Votes (Like | Disagree)
jlocker Avatar
69 months ago
Well it is amazing that my Apple Watch 1.0 is still running today after all the years I have owned from the original release of the watch with the same battery. But it is time to upgrade to Apple Watch 6 this fall :)
Score: 3 Votes (Like | Disagree)
Apple_Robert Avatar
69 months ago

Always on display and 32 GB of storage were 2 key features to get me to upgrade from Series 4 to Series 5. I haven't seen anything yet that would get me to upgrade to Series 6.
There is still time to be amazed come September.

As to battery life, I am going to expect the same battery life as my series 5.
Score: 2 Votes (Like | Disagree)