Apple Watch Series 7 Teardown Reveals Battery Capacity, Display Updates and More

With the Apple event this week and the imminent launch of new MacBook Pro models, it's easy to forget that the Apple Watch Series 7 just came out last Friday. iFixit didn't forget, though, and has done one of its traditional teardowns on Apple's newest wrist-worn device.

Today's teardown features both the 41 and 45mm versions of the watch, and it unveils some secrets we weren't previously aware of. The 45mm Apple Watch Series 7 has a 1.189Wh battery inside (309 mAh), which is a 1.6 percent increase over the 1.17Wh battery in the 44mm Series 6.

ifixit apple watch teardown 1

Series 7 on left, Series 6 on right (44/45mm models)

The 41mm Apple Watch Series 7 features a 1.094Wh battery, a 6.8 percent increase over the 1.024Wh battery in the prior-generation 40mm model. Both batteries have slightly wider dimensions, but iFixit says the increase likely goes to the new, brighter displays rather than adding battery life.

The internals of the Series 7 are similar to the Series 6, but there are small differences, such as the removal of a bracket where the diagnostic port was once located.

ifixit apple watch teardown 2

Series 7 on left, Series 6 on right (44/45mm models)

Apple has touted IP6X dust resistance for the Series 7, which older models may have had too, but Apple just didn't do the specific test for the certification. There are, however, some new ingress-protection measures such as a mesh covering the speaker grille. The removal of the diagnostic port may also contribute to the dust resistance, and removing this port saves some internal space.

iFixit teamed up with former Apple engineers who work at Instrumental for the teardown, giving us some additional context into why the Apple Watch may have seen delays prior to its October launch.


According to iFixit, the Apple Watch Series 7 has new display technology that was likely a "huge pain to manufacture at scale." The new Apple Watch appears to be equipped with a touch-integrated OLED panel, or an "on-cell touch," which is also used in the iPhone 13. Apple is also using just one flex cable for the display instead of two, which iFixit says is "not a trivial change."

Every teardown comes with a repair score, and the Series 7 earned a 6 out of 10. iFixit says that display and Taptic Engine swaps "worked great" in its testing, as did changing out the battery.

Related Roundup: Apple Watch Series 8
Buyer's Guide: Apple Watch (Buy Now)
Related Forum: Apple Watch

Top Rated Comments

Ghost31 Avatar
12 months ago
A whole 1.6 % better battery? Holy crap. Why didn’t Apple talk about this?!
Score: 19 Votes (Like | Disagree)
Apple_Robert Avatar
12 months ago
Sometimes, it is the little things that can make the biggest difference. I am happy with my Series 7.
Score: 17 Votes (Like | Disagree)
jmgregory1 Avatar
12 months ago
Looking at the internals, it’s understandable why Apple has shied away from making a round Watch. It’s tough enough to get everything into the rectangular Watch as is.
Score: 11 Votes (Like | Disagree)
MrGimper Avatar
12 months ago

Had a close look today and compared the Series 7 to the Series 5 on my wrist. Result: Absolutely no need to spend >500€ for something that looks exactly the same, despite a little bit bigger display. Furthermore I like the space grey of my watch and this color seems to be no longer available for Aluminium watches.
Erm, "congratulations" ??
Score: 10 Votes (Like | Disagree)
_Spinn_ Avatar
12 months ago
I love iFixit's teardowns - it is always interesting to see what makes our devices tick.
Score: 8 Votes (Like | Disagree)
BC2009 Avatar
12 months ago
I got a 45mm Series 7 GPS/WiFi Nike Watch in Midnight color to replace my Space Grey Series 4. I was nervous about the color but the color is awesome. I own some black bands that would have gone better with the black stainless steel from years past and those bands look perfect with the aluminum midnight color.

I much prefer this color over space grey now that I see it in person. The website makes it look blueish but I really can’t even see the blue hue at all. It just looks black.

And the watch is a big improvement over series 4. I felt every upgrade since series 4 has been very incremental (very S-like) — especially the series 5 and 6. The only reason I would not call series 7 an S upgrade is because Apple has never increased the display size in an iPhone S upgrade. But when you upgrade 3 versions in one shot those S-like upgrades add up:

- 20% bigger display
- virtually bezel-less display
- always-on display
- O2 sensor
- always-on altimeter
- compass for maps
- better heart rate sensor
- faster charging (S6 and S7 again)
- better battery life
- faster processor
- more durable

The new design with the bigger bezel-less display was the biggest upgrade to me, but the O2 sensor is nice to have though I own a more accurate SpO2 sensor that goes on my fingertip. It’s nice to always have it on my watch (like how we have better cameras than iPhone but having the camera always with you is the best). I almost got the Series 5 just for the always on display but I’m glad to have it now especially since they fixed the power draw issue by adding battery life in the series 6.

All-in-all I would call this a big upgrade for anybody wearing a series 4 or even a series 5. I would hold out for a few more incremental upgrades in the series 8 if you have a series 6 since that is only a year old. The display is better in series 7, but that’s a lot of money to spend for a more enjoyable display on your wrist.
Score: 7 Votes (Like | Disagree)

Related Stories

apple watch blue holiday

Deals: Apple Watch Series 7 Models Drop $50 in Amazon's Newest Sale

Tuesday December 28, 2021 7:09 am PST by
A few pre-Christmas deals on the Apple Watch Series 7 have returned this week, taking $50 off the 41mm and 45mm GPS models of the latest Apple Watch. Starting with the 41mm GPS Apple Watch Series 7 in Green Aluminum with a Clover Sport Band, this model is available for $349.00, down from $399.00. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make ...
91mmobile apple watch series 1

Apple Watch Series 7 Major Redesign Revealed

Friday August 27, 2021 3:07 am PDT by
A major redesign appears to be in store for the upcoming Apple Watch Series 7 models, based on recent reports. According to renders from 91mobiles that were reportedly obtained from supply chain sources, the Apple Watch Series 7 will offer a new design that mirrors the squared-off edges of the iPhone 12 lineup, iPad Pro, iPad Air, and 24-inch iMac. The Series 7 will also apparently be 1.7mm...
Apple Watch 7 Unreleased Feature

Apple Watch Series 7 to Focus on One Major Upgrade

Wednesday August 4, 2021 2:12 am PDT by
The upcoming Apple Watch Series 7 will focus on one important feature in an attempt to tempt existing Apple Watch users that have an older device to upgrade, according to recent reports. Apple may skip adding new health sensors to this year's Apple Watch Series 7 in favor of improving the device's battery life. The company is said to be adopting new double-sided System in Package (SiP)...
apple watch series 7 casing

Apple Watch Series 7 the Same Thickness as Series 6, Despite Rumors

Friday October 8, 2021 7:36 am PDT by
Despite speculation that the Apple Watch Series 7 may be thinner or thicker than its predecessors, the latest models have the same thickness as the Series 6. Now that Apple's official specification pages have gone live, it has been confirmed that the Apple Watch Series 7 models are 10.7mm thick, which is the same as the Series 6 models that have today been discontinued. Both the 41mm and...
apple watch 6s 202009

Apple Discontinues Apple Watch Series 6 as Series 7 Pre-Orders Begin

Friday October 8, 2021 7:03 am PDT by
The Apple Watch Series 6, introduced by Apple in September of last year, has been discontinued following the launch of the new Apple Watch Series 7. Following pre-orders of the Apple Watch Series 7 opening up earlier today, Apple has removed the Series 6 from its website, no longer offering it to purchase for customers. The Apple Watch Series 7 replaces the Series 6 and now leaves the Apple...
Apple Watch Series 8 What We Know Feature

Gurman: Apple Watch Series 8 to Bring 'Major Updates to Activity Tracking'

Monday February 28, 2022 3:45 am PST by
This year's Apple Watch Series 8 will include major updates in the area of activity tracking and a faster chip that will power all of Apple's smartwatch models in a new-look lineup, according to well-connected Bloomberg journalist Mark Gurman. Apple is believed to be bringing three new Apple Watch models to customers in 2022, including the Apple Watch Series 8, an updated Apple Watch SE, and ...
Apple Watch Series 7 Rainbow Cropped Blue Discount

Deals: Apple Watch Series 7 Models Discounted by $50, Starting at $349 for 41mm GPS

Wednesday March 16, 2022 7:38 am PDT by
Amazon has returned with all-time low discounts on the Apple Watch Series 7 today, reaching up to $50 off many models of the newest Apple Watch. Compared to other Apple products, the Apple Watch Series 7 remains one of the most consistently discounted devices in Apple's lineup for 2022. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a...
Apple Watch 7 Unreleased Feature Flat

Apple Watch Series 7 Production Will Reportedly Ramp Up at End of September, New MacBook Pros Expected Later in Fall

Thursday September 2, 2021 6:26 am PDT by
Following a report earlier this week from Nikkei Asia that claimed volume production of upcoming Apple Watch Series 7 models had been delayed due to manufacturing challenges, a new report has offered a more specific timeframe. According to a paywalled preview of a DigiTimes report, suppliers are scheduled to ramp up Apple Watch Series 7 production starting at the end of September. That...

Popular Stories

apple watch ultra hammer test

YouTuber Tests Apple Watch Ultra Durability With a Hammer: Table Breaks Before the Watch

Sunday September 25, 2022 2:27 pm PDT by
A YouTuber has put Apple's claims for the durability of the Apple Watch Ultra to the test by putting it up against a drop test, a jar of nails, and repeated hits with a hammer to test the sapphire crystal protecting the display. TechRax, a channel popular for testing the durability of products, first tested the Apple Watch Ultra by dropping it from around four feet high. The Apple Watch...
AirPods Max 2022 Colors

Ten Things AirPods Pro 2 Tell Us About AirPods Max 2

Saturday September 24, 2022 1:00 am PDT by
Upon the release of the second-generation AirPods Pro, the AirPods Max became the oldest current-generation AirPods product still in Apple's lineup. Introducing several new features like Adaptive Transparency and the H2 chip, the second-generation AirPods Pro may provide some of the best indications yet of what to expect from the second-generation AirPods Max. Almost two years later, rumors...
tim cook spring loaded event

Six Major Products to Expect From Apple in 2023

Sunday September 25, 2022 10:57 am PDT by
As we approach the end of a busy product release season for Apple with only new iPads and Macs left to be announced over the next month or so, we're also setting our sights on 2023. Apple is rumored to have several major products in the pipeline for next year, including new Macs, a new HomePod, a VR/AR headset, and so much more. Other than new iPhones and Apple Watches, which are expected...
Tim Cook Apple Event

Gurman: New iPads and Macs May Be Announced Through Press Releases, No October Event

Sunday September 25, 2022 6:50 am PDT by
Apple may decide to release its remaining products for 2022, which include updated iPad Pro, Mac mini, and 14-inch and 16-inch MacBook Pro models, through press releases on its website rather than a digital event, according to Bloomberg's Mark Gurman. In his latest Power On newsletter, Gurman said that Apple is currently "likely to release its remaining 2022 products via press releases,...
apple watch series 7 aluminum colors yellowbg

Don't Want the Apple Watch Ultra or Series 8? Amazon Has Record Low Prices on Series 7 Models This Week

Friday September 23, 2022 6:56 am PDT by
The Apple Watch Series 8 and Apple Watch Ultra are now available to purchase, but if you aren't interested in these updates you can save a lot of money on Series 7 models right now on Amazon. Note: MacRumors is an affiliate partner with Amazon. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. The best deals are on cellular...
iphone 14 pro max deep purple

iPhone 15 'Ultra' Could Replace Pro Max Model Next Year

Sunday September 25, 2022 7:02 am PDT by
Apple is gearing up to possibly replace its "Pro Max" iPhone with an all-new "Ultra" iPhone 15 model next year, reliable Bloomberg journalist Mark Gurman said today. Writing in his latest Power On newsletter, Gurman said that for the iPhone 15, Apple is planning a revamped design alongside USB-C and a potential name change. Apple could replace its "Pro Max" branding, which it started to use...
AirPods Pro Second Generation 2 Pairing Feature 1

AirPods Pro 2 Engravings Appear in iOS During Pairing and Connecting

Friday September 23, 2022 9:40 am PDT by
Customers who personalize their second-generation AirPods Pro charging case with an engraving will now have that engraving reflected directly on iOS as they pair and connect their AirPods Pro. Apple allows customers to personalize their AirPods Pro charging case with a special engraving that can include select emojis and Memojis. Unlike before, starting with the second-generation AirPods...
General iOS 16 Feature Yellow

Some iOS 16 Users Continue to Face Unaddressed Bugs and Battery Drain Two Weeks After Launch

Monday September 26, 2022 7:34 am PDT by
Today marks exactly two weeks since Apple released iOS 16 to the public. Besides the personalized Lock Screen, major changes in Messages, and new features in Maps, the update has also seen its fair share of bugs, performance problems, battery drain, and more. After major iOS updates, it's normal for some users to report having issues with the new update, but such reports usually subside in...
14 vs 16 inch mbp m2 pro and max feature 1

New 14-Inch and 16-Inch MacBook Pros Reportedly Launching Later This Year

Friday September 23, 2022 7:08 am PDT by
Apple plans to release new MacBook Pro models in the fourth quarter of 2022, according to supply chain publication DigiTimes. The report does not mention specific models, but it very likely refers to the next-generation 14-inch and 16-inch MacBook Pros given that the 13-inch model was already updated earlier this year. There has been uncertainty surrounding the timing of new 14-inch and...