42mm Apple Watch 2 May Have 35% Larger Battery - MacRumors
Skip to Content

42mm Apple Watch 2 May Have 35% Larger Battery

apple_watch_ssA purported photo of a larger 334 mAh lithium-ion battery destined for the Apple Watch 2 has surfaced on Chinese microblogging service Weibo, foreshadowing expected battery life improvements coming to the wrist-worn device.

The battery is allegedly for the 42mm model, which currently has a 246 mAh battery, suggesting the next-generation 42mm model could have a 35.7% larger battery. The photo does not provide any clues about potential battery life improvements coming to the smaller 38mm model, which is currently equipped with a 205 mAh battery.

The veracity of the photo cannot be confirmed, as is often the case, but KGI Securities analyst Ming-Chi Kuo said an Apple Watch 2 with a higher capacity battery will launch later this year. The larger battery should unsurprisingly lead to longer battery life for the Apple Watch, which is currently rated for up to 18 hours of mixed usage and up to 72 hours in Power Reserve mode on a single charge.

apple_watch_2_battery_weibo
The much-rumored Apple Watch 2 is expected to be released in late 2016 with a faster TSMC-built processor, GPS, barometer, superior waterproofing, and a higher capacity battery -- but no cellular. Both 38mm and 42mm screen sizes will be retained with thinner display technology adopted. The device could launch in September alongside the iPhone 7 and spec-bumped Apple Watch 1 models.

Related Roundup: Apple Watch 12
Buyer's Guide: Apple Watch (Buy Now)
Related Forum: Apple Watch

Popular Stories

Surprise and Shine Live Coverage Article

Apple Event Live Blog: iPhone Duo, iPhone 18 Pro, and More

Wednesday September 9, 2026 9:10 am PDT by
Apple's "Surprise and Shine" event kicks off today at 10:00 a.m. Pacific Time, where we're expecting to see the foldable iPhone Duo, the iPhone 18 Pro and Pro Max, Apple Watch Series 12 and Ultra 4 models, new AirPods 5 earphones, and perhaps some other announcements. Apple is providing a live video stream on its website, on YouTube, and in the company's TV app across various platforms. We...
Apple Watch Ultra 2 Black Titanium

New Apple Watch Series 12 and Apple Watch Ultra 4 Features Revealed

Sunday August 30, 2026 7:54 am PDT by
Bloomberg's Mark Gurman today further outlined what to expect from the Apple Watch Series 12 and Apple Watch Ultra 4 set to be unveiled on September 9. While it was initially rumored that Touch ID may be coming to the Apple Watch this year, Gurman reiterated that he does not expect the Series 12 or Ultra 4 to have any major design changes compared to the current Series 11 and Ultra 3 models. ...
apple surprise and shine event

Apple Event Today: iPhone 18 Pro and iPhone Duo Cheat Sheet

Tuesday September 8, 2026 10:24 am PDT by
Apple's biggest event of the year is almost here, and all eyes are on Cupertino. With the first foldable iPhone expected to headline Apple's "Surprise and Shine" event on Wednesday, September 9, at 10:00 a.m. Pacific Time, the rumor mill has been running full throttle, fuelled by the biggest single design change in the life of the iPhone. To get you up to speed, here's a quick reference...

Top Rated Comments

joshwenke Avatar
131 months ago
I've actually been very impressed with my watch's battery. The watch IS something I would like to see thinness improved on over battery, ironically.
Score: 33 Votes (Like | Disagree)
131 months ago
I've actually been very impressed with my watch's battery. The watch IS something I would like to see thinness improved on over battery, ironically.
I agree but when they add GPS it needs a much bigger battery
Score: 13 Votes (Like | Disagree)
S.B.G Avatar
131 months ago
For such a rather small device, 35% sounds quite significant.
Score: 12 Votes (Like | Disagree)
marvz Avatar
131 months ago
Charging it everyday isn't impressive. It's a chour. But if I can do two full days with active use - then that's worth considering.
What's the big difference? It probably leads to forgetting to charge your Apple Watch every second night instead of making it a habit every night. And also I don't think that many people are wearing their watches while sleeping.. (only use case would be sleep tracking but therefore you will probably need a battery life of about 5-7 days to make it really useful).
Score: 10 Votes (Like | Disagree)
matjamca Avatar
131 months ago
I might get one this time round.
Score: 10 Votes (Like | Disagree)
OneMike Avatar
131 months ago
If you workout for any length of time, the watch battery life sucks. First thing in the morning I do is hit the gym. Usually at about 60% battery before 7AM. Granted I let it charge while I get ready for work when possible.

Improved battery life will be welcomed though.
Score: 8 Votes (Like | Disagree)