Although Apple remains conservative regarding the battery life of the Apple Watch, many users have noted that the wearable device makes it through one day with plenty of charge left over in its 18-hour estimated life. Still, third-party power banks and portable chargers have been popular mainstays in the Apple Watch accessory line, and recently Kanex launched its own charging device for the Apple Watch, called the GoPower Watch.

Kanex's charger is packed with a 4,000 mAh battery and a claim that, on a full charge, it can recharge the Apple Watch up to six times with an integrated inductive charger. As a bonus, the GoPower Watch also includes a USB port, letting you charge your iPhone (or any USB-powered device) simultaneously with the Apple Watch. There's also priority charging, so your devices charge first and the battery pack second.

Design

Kanex's GoPower Watch meets the form and function that any successful portable battery pack needs to be used on a daily basis. Its small 3-inch square will fit comfortably in a backpack, and the quartered LED lights -- surrounding the only button on the housing -- provide quick and easy reminders of how much juice is left in the pack.

kanex-review-4
The slightly raised inductive charger is surrounded by a smooth Space Gray material (admittedly, a few shades darker than Apple's definition of Space Gray), that feels sturdy despite the small frame of the GoPower Watch. Interestingly, the actual inductive charger on Kanex's device is a bit larger than Apple's own inductive charger, but its added 1/4 of an inch appears negligible and doesn't affect the charging of the device.

kanex-review-8

GoPower Watch compared with Apple's Magnetic Charger

Otherwise, the design is no-frills. The front and rear of the pack are made up of a black, plastic-type material that's a bit more fingerprint-attractive than the Space Gray of the rest of the device. On the back users will find the micro-USB port to charge up the battery pack, and the USB Type-A port for smartphone charging. Anyone opposed to large branding on their products probably won't like the prevalent Kanex logo on the front of the unit, however.

Charging the Apple Watch

After using Kanex's GoPower Watch battery for a week, I found that the company's claims of six full recharges on an Apple Watch to be right on the money. The battery pack uses a simple circle of lights, cut into four quarters, to display the remaining charge in its 4,000 mAh battery. The GoPower Watch lost its first quarter of battery in the middle of the third charge of my Apple Watch, and then finally lost the second quarter in the sixth Apple Watch charge.

kanex-review-5
From there the battery status declined quickly, and after the pack filled my Apple Watch up to 100% life for the sixth time, the final portion of the ring began flashing and the battery quickly died. During these tests I didn't charge my iPhone, focusing first on the company's own Apple Watch-heavy marketing for the accessory. And in that sense, the GoPower Watch delivered on its promises. The average charging time of all the tests was about 90 minutes.

If used solely as a power bank for an Apple Watch, Kanex's device will easily provide its intended six full recharges on Apple's wearable, although the larger battery on the Apple Watch Series 2 means those models might get slightly fewer charge cycles. Although that might be a bit of overkill for most casual Apple Watch wearers, the combination of the integrated inductive charger and deep well of battery life could justify the $99 price tag for those who find themselves away from a traditional power source on a consistent basis.

Charging the iPhone

After depleting the GoPower Watch during my Apple Watch tests, I topped off the battery pack again -- a lengthy process that takes the large part of an afternoon, which is the case for most battery packs -- and focused on the iPhone. With the GoPower Watch fully charged, I managed to recharge my iPhone 6s Plus from 10 percent to 99 percent charge over the course of about two hours, after which Kanex's battery was down to 50 percent.

In a subsequent test, to see how much percentage I could add onto my iPhone with the rest of the GoPower Watch's battery, the battery pack swiftly whittled down to 25 percent and then died, adding on about 15 percent charge to my iPhone. Considering the 2,750 mAh within the iPhone 6s Plus, one full charge with a little left over makes sense coming off of the GoPower Watch's 4,000 mAh battery.

kanex-review-1
Although smaller smartphones could get more out of it, like the iPhone SE (1,624 mAh), iPhone 6s (1,715 mAh) and iPhone 7 (1,960 mAh), the GoPower Watch is simply not an iPhone accessory; it's an Apple Watch accessory that could potentially recharge your iPhone in a pinch, with very little left over for your watch. Simultaneous charging of each device also negates the portability such battery packs allow for smartphones, since the Apple Watch needs to remain on a flat surface to stay attached to the inductive charger.

For iPhone battery packs, similarly priced accessories, like Mophie's powerstation XXL, give users upwards of 20,000 mAh for around $100. Other brands, including Anker, offer similar battery capacities at even cheaper prices. As such, it's hard to harp on GoPower Watch's clear intent to focus on Apple Watch over iPhone, but it's an aspect of the accessory that should still be noted.

Bottom Line

Overall, GoPower Watch's solid design and integrated induction charger make it one of the most enticing charging solutions on the market for Apple's wearable device, if you're an Apple Watch power user and in need of one, that is. Lack of Nightstand Mode and closed-loop band support could, however, be deal-breakers for some.

kanex-review-7

The display shows the GoPower Watch's dwindling battery

Compared to other Apple Watch battery packs, Kanex's solution is a slightly steeper monetary investment, but its higher-capacity battery justifies the price. Nomad's Pod, for comparison, costs $29.95 but provides an 1,800 mAh battery, or the ability to keep your Apple Watch "powered all weekend," according to the company.

If you repeatedly find yourself scrambling for a power source for your Apple Watch when not at home, and want to invest in something you won't have to constantly remind yourself to charge all too often, the GoPower Watch makes a reliable case for itself. Just remember that it won't provide much in the way of repeat charges to a smartphone, especially any larger-screened models with higher-capacity batteries.

Pros
- Clean design with soft, attractive Space Gray material
- Integrated inductive charger
- Charging Apple Watch as quickly and reliably as first-party accessories
- Meets Kanex's claim of six full Apple Watch charges

Cons
- Dies quickly when charging bigger devices through USB-A port
- Doesn't support Nightstand Mode or closed-loop bands

How to Buy

Anyone interested can purchase the Kanex GoPower Watch from the company's website for $99.95. Kanex also sells a line of other accessories, including a USB-C battery pack for the 12-inch MacBook, a Thunderbolt 3 adapter, and a Bluetooth Mac keyboard that can sync with up to four devices and includes Apple's long-gone numeric keypad.

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

Top Rated Comments

co.ag.2005 Avatar
81 months ago
pretty cool. but then I realize I can just use my 10,400 mAh USB battery pack ('https://www.amazon.com/gp/product/B00UBDI7EC/ref=oh_aui_search_detailpage?ie=UTF8&psc=1') and my extra Apple Watch cable ;)
Score: 3 Votes (Like | Disagree)
Kaibelf Avatar
81 months ago
Remember when you had to pay for [S]iOS[/S] iPhone OS updates?
And OSX, and iWork, etc. Apple doesn't charge for any of that anymore, but god forbid they don't give away everything or sell at the cost of the BOM. It's almost as if they are a business or something! Outrageous.
Score: 3 Votes (Like | Disagree)
Kaibelf Avatar
81 months ago
For the cost, the Apple charger should have a battery. Can't understand why apple hasn't done that. Seems like a great use for their new conforming battery tech.
Another article, another opinion about how Apple should give away something for free that they currently don't and instead realize the difference as profit.
Score: 3 Votes (Like | Disagree)
Mac 128 Avatar
81 months ago
Another article, another opinion about how Apple should give away something for free that they currently don't and instead realize the difference as profit.
Sure. Apple should have charged for the AirPods charging case too.
Score: 2 Votes (Like | Disagree)
macduke Avatar
81 months ago
Another article, another opinion about how Apple should give away something for free that they currently don't and instead realize the difference as profit.
Who said anything about giving it away for free? There's money to be had in volume by making the thing actually appealing to purchase. I had forgotten it even existed until this comment. It's basically their $29 2m cable with a plastic weighted disc around it that somehow makes it worth an extra $50, even though it doesn't look very appealing. I can't imagine they sell that many of them. It's better design if the weight was instead a battery, and brings a better value proposition to the table through better design. I mean, for crying out loud, their iPhone docks are solid aluminum anodized to match the device color, and feature audio pass-through to stereo audio jack, and they cost $30 less. The pricing of this item is not consistent with their other accessories, which are already priced towards the top end of the consumer electronics market. I get charging more for superior design, but there is little to be found in this particular accessory.
Score: 1 Votes (Like | Disagree)
YegorH Avatar
81 months ago
A guy walks with two really heavy, 80lb suitcases. A passer by asks him what time it is. The guy puts down both suitcases, rolls up his sleeve, looks at his watch and heavily breathing tells the time. The other guy is astonished seeing he has a digital watch and asks what else his watch can do. After learning about all the features, he expresses his surprise that the battery must be very powerful and long lasting. The owner of the watch replies: "Well, now with these two bad boys added - pointing to his suitcases - I get a full 1 hour of usage."
Score: 1 Votes (Like | Disagree)

Popular Stories

iOS 16

Apple Releases iOS 16.1.2 With Carrier Improvements and Crash Detection Optimizations

Wednesday November 30, 2022 10:09 am PST by
Apple today released iOS 16.1.2, another minor bug fix update that comes one week after the release of iOS 16.1.1 and three weeks after the launch of iOS 16.1, an update that added support for iCloud Shared Photo Library, Matter, Live Activities, and more. The iOS 16.1.2 update can be downloaded on eligible iPhones over-the-air by going to Settings > General > Software Update. According...
Emergency SOS via Satellite iPhone YT

Apple's iPhone 14 Emergency SOS via Satellite Feature Saves Stranded Man in Alaska

Thursday December 1, 2022 4:37 pm PST by
With the launch of iOS 16.1, Apple rolled out a Emergency SOS via Satellite, which is designed to allow iPhone 14 owners to contact emergency services using satellite connectivity when no cellular or WiFi connection is available. The feature was put to the test in Alaska today, when a man became stranded in a rural area. In the early hours of the morning on December 1, Alaska State Troopers ...
General iOS 16 Feature Yellow

iOS 16.2 for iPhone Launching This Month With These 8 New Features

Thursday December 1, 2022 8:44 am PST by
Apple plans to publicly release iOS 16.2 for the iPhone in mid-December, according to Bloomberg's Mark Gurman. The update remains in beta testing for now, with at least eight new features and changes already uncovered so far. iOS 16.2 introduces a number of new features, including Apple's new whiteboard app Freeform, two new Lock Screen widgets for Sleep and Medications, the ability to hide...
applefifthavenue

Man Robbed After Buying 300 iPhones From Apple Fifth Avenue

Tuesday November 29, 2022 11:54 am PST by
An unnamed 27-year-old man who purchased 300 iPhones from Apple Fifth Avenue on Monday morning was robbed shortly after leaving the store, according to 1010Wins Radio in New York. He was carrying 300 iPhone 13s in three bags and walking to his car at 1:45 a.m. when another car pulled up next to him. Two men jumped out and demanded that he hand over the bags. Not wanting to hand over 300...
14 vs 16 inch mbp m2 pro and max feature 1

'M2 Max' Geekbench Scores Leak Online, Revealing Rumored Specs and Performance

Wednesday November 30, 2022 2:39 am PST by
Geekbench scores allegedly for the upcoming "M2 Max" chip have surfaced online, offering a closer look at the performance levels and specific details of the forthcoming Apple silicon processor. The Geekbench results, first spotted on Twitter, are for a Mac configuration of with the M2 Max chip, a 12-core CPU, and 96GB of memory. The Mac listed has an identifier "Mac14,6," which could be...
iPad 10 Battery Pull Tabs

iPad 10 Teardown Reveals Why Device Isn't Compatible With Apple Pencil 2

Thursday December 1, 2022 10:48 am PST by
Do-it-yourself repair website iFixit today shared a video teardown of Apple's new 10th-generation iPad, providing a closer look inside the tablet and revealing why the device lacks support for the second-generation Apple Pencil. The teardown reveals the internal layout of the iPad, including its two-cell 7,606 mAh battery, logic board with the A14 Bionic chip, and more. As suspected, the...
Apple Park View

Elon Musk Meets With Apple CEO Tim Cook Amid Claims of Twitter App Store Dispute [Updated]

Wednesday November 30, 2022 12:43 pm PST by
Twitter CEO Elon Musk today met with Apple CEO Tim Cook at the Apple Park campus in Cupertino, California, according to a tweet shared by Musk this afternoon. Musk thanked Cook for taking him around Apple's headquarters, with no mention of what the two might have discussed. The meeting comes just after Musk on Monday claimed that Apple has "mostly stopped" offering ads on Twitter, and that...
eufy camera

Anker's Eufy Cameras Caught Uploading Content to the Cloud Without User Consent [Updated]

Tuesday November 29, 2022 1:01 pm PST by
Anker's popular Eufy-branded security cameras appear to be sending some data to the cloud, even when cloud storage is disabled and local only storage settings are turned on. The information comes from security consultant Paul Moore, who last week published a video outlining the issue. According to Moore, he purchased a Eufy Doorbell Dual, which was meant to be a device that stored video...
app store awards 2021

Apple Announces 2022 App Store Award Winners, Highlighting Best Apps of the Year

Tuesday November 29, 2022 3:10 am PST by
Apple today announced its 2022 App Store Award winners, highlighting the 16 best apps and games selected by Apple's global App Store editorial team. The top apps were chosen by Apple for their quality, innovative technology, creative design, positive cultural impact, and ability to deliver "exceptional experiences." Apple CEO Tim Cook said: This year's App Store Award winners reimagined...
iOS 16

Apple Still Has These 5 Things to Release Heading Into 2023

Thursday December 1, 2022 7:12 am PST by
The calendar has turned to December and that means Apple has only one month left to fulfill its promises of releasing an Apple Music Classical app and expanding its self-service repair program to Europe before the end of 2022. Delays are always possible, of course, so the plans could be pushed back to 2023. In any case, we have put together a list of five things that Apple still has to release...