ZENS recently debuted its latest product, an iPhone/Apple Watch Power Bank that has a built-in Apple Watch charging puck and a USB port, allowing you to charge all of your devices at once.

Priced at €69.99 (or $78.00) the 4,000 mAh ZENS Power Bank is about the size and shape of a chocolate bar, though perhaps a bit wider. Because it's neither short nor particularly flat, it doesn't fit well in a pocket, but it's a good size for a backpack or bag when traveling.

zenspowerbankdesign
The Power Bank is sturdy and well-made, constructed from a soft-finish black plastic material. At one end, there's an Apple Watch charging puck built into the device, and at the top, there's a USB port for plugging in an iPhone or other USB-powered device, and a micro-USB port that's used for charging.

There's a single button that's used as an on/off switch, which needs to be pressed whenever the Apple Watch is placed on top of it to activate charging. The Power Bank has a single blue LED next to the micro-USB port so you can tell if it has charge left, but because there aren't multiple LEDs, there's no way to tell exactly how much charge is remaining.

zenspowerbankusbport
Due to the flat, skinny shape of the ZENS Power Bank, I sometimes had trouble getting my Apple Watch situated just right so it would charge, and a knock was enough to dislodge it if I happened to hit it when reaching for something on my nightstand in the middle of the night. That said, it does work with multiple bands and it's no less convenient than using the Apple Watch charger on its own.

zenspowerbankthickness
I took the ZENS iPhone/Apple Watch Power Bank with me on a trip recently, and I can confirm that at 4,000 mAh, it has enough juice to keep an Apple Watch charged for a week. I used it for nine days straight to keep my 38mm Apple Watch charged, but I wasn't draining it every single day.

As for the iPhone, the ZENS Power Bank can do just about one full iPhone 7 Plus charge and one full Apple Watch charge, but that eats up a lot of the capacity because it's limited to 4,000 mAh, which is on the small side for portable iPhone batteries.

I was able to get it to charge my iPhone 7 Plus and my Apple Watch, but it was essentially drained after that. I don't have an iPhone 7 to test, but you could potentially get two charges out of the Power Bank because the iPhone 7 has a lower-capacity 1,960 mAh battery inside. It's worth noting that the Power Bank offers 2-amp charging, so the iPhone will charge at a decent speed.

zenspowerbankwithapplewatch
Because it can only deliver a single charge to an iPhone 7 Plus and an Apple Watch simultaneously, this is only going to work for day trips when you need a little extra juice. Conferences, a long day at Disneyland, and a night camping will all work fine, but don't buy this for a longer trip unless you only need to charge your Apple Watch.

If you just want something to power the Apple Watch, this will work for a solid week of standard Apple Watch use. A little more if you're not using much battery, and a little less if you're draining your watch every day.

At home, the Power Bank is nice if you want an Apple Watch charger that has no cords and only needs to be charged once a week from a computer or USB power adapter (it doesn't come with one). It can sit on a desk without taking up too much room, and its neutral design will match most decor.

Bottom Line

The ZENS iPhone/Apple Watch Power Bank costs approximately $78, which is not a great price for a 4,000 mAh battery pack.

On Amazon, you can get a smaller 5,200 mAh battery pack for $15.99, or a 10,000 mAh battery pack for $30, but it won't have the built-in Apple Watch charger that's in the ZENS Power Bank.

zenspowerbankfinal
If you don't want to carry around an Apple Watch charger and want a built-in solution, the ZENS iPhone/Apple Watch Power Bank will deliver it, but personally, I'd rather pay much less for more power, especially if I'm seeking something that's got enough juice to charge my iPhone. You're going to be carrying a micro-USB charging cord and a Lightning cord to charge the iPhone if you use the ZENS Power Bank anyway, so I'm not sure how much of a convenience factor it's adding.

If you want a cord-free desktop Apple Watch charging solution or need a way to power an Apple Watch alone for a week, however, the ZENS iPhone/Apple Watch Power Bank could be worth checking out.

Pros:

  • Can keep Apple Watch charged for a week
  • Built-in Apple Watch charging puck

Cons:

  • Expensive
  • Low capacity
  • Not suitable for more than 1 iPhone 7 Plus charge
  • Requires micro-USB cord for charging
  • No way to determine charge level

How to Buy

The ZENS iPhone/Apple Watch Power Bank can be purchased from the ZENS website for €69.99 or about $78. It ships from the Netherlands to the United States and many other countries around the world.

Tags: Review, ZENS

Top Rated Comments

oneMadRssn Avatar
83 months ago
Kickstart it! I bet there are a lot of people who would pay $30 for a cable like that. I wonder how much both MFi components would cost?
I don't have the time nor the wherewithal to do that. If someone that does is reading this, I'm picturing a simple white cable, 4 feet long. One end is a standard USB-A plug (or USB-C maybe?) The other end is a regular lightning plug. About 4-6" down from the lighting-end of the cable is the charging puck, where the cable comes in from the USB end on one side, and 180-degrees oppose it the cable comes out to the lightning end.

[]USB]---------------3'6"---------------((puck))----6"----==lightning
Score: 2 Votes (Like | Disagree)
Analog Kid Avatar
83 months ago
I don't have the time nor the wherewithal to do that. If someone that does is reading this, I'm picturing a simple white cable, 4 feet long. One end is a standard USB-A plug (or USB-C maybe?) The other end is a regular lightning plug. About 4-6" down from the lighting-end of the cable is the charging puck, where the cable comes in from the USB end on one side, and 180-degrees oppose it the cable comes out to the lightning end.

[]USB]---------------3'6"---------------((puck))----6"----==lightning
As long as we're dreaming, can I ask for a bare puck that has a lightning socket in the side so I can just stick it on the end of a lightning cable?
Score: 2 Votes (Like | Disagree)
paul4339 Avatar
83 months ago
I don't quite get why they used micro-USB.
Score: 1 Votes (Like | Disagree)

Popular Stories

iOS 17 on Phone Feature

Gurman: iOS 17 to Provide Several 'Most Requested Features'

Sunday March 26, 2023 6:05 am PDT by
Apple changed the strategy for iOS 17 later in its development process to add several new features, suggesting that the update may be more significant than previously thought, Bloomberg's Mark Gurman reports. In January, Gurman said that iOS 17 could be a less significant update than iPhone updates in previous years due to the company's intense focus on its long-awaited mixed-reality...
iOS 16

iOS 16.4 Will Add These 8 New Features to Your iPhone

Sunday March 26, 2023 8:06 am PDT by
Following nearly six weeks of beta testing, iOS 16.4 is expected to be released to the public as soon as this week. The software update includes a handful of new features and changes for the iPhone 8 and newer. To install an iOS update, open the Settings app on the iPhone, tap General → Software Update, and follow the on-screen instructions. Below, we have recapped eight new features and...
apple mixed reality headset concept by david lewis and marcus kane

Some Apple Employees Seriously Concerned About Mixed-Reality Headset as Announcement Draws Closer

Sunday March 26, 2023 8:25 am PDT by
Some Apple employees are concerned about the usefulness and price point of the company's upcoming mixed-reality headset, The New York Times reports. Apple headset concept by David Lewis and Marcus Kane Initial enthusiasm around the device at the company has apparently become skepticism, according to eight current and former Apple employees speaking to The New York Times. The change of tone...
Steve Jobs Theater dusk

Apple Reportedly Demoed Mixed-Reality Headset to Executives in the Steve Jobs Theater Last Week

Sunday March 26, 2023 5:53 am PDT by
Apple showcased its mixed-reality headset to the company's top 100 executives in the Steve Jobs Theater last week, according to Bloomberg's Mark Gurman. In the latest edition of his "Power On" newsletter, Gurman explained that the "momentous gathering" is a "key milestone" ahead of the headset's public announcement planned for June. The event was intended to rally Apple's top members of...
top stories 25mar2023

Top Stories: iPhone 15 Pro Design Leak, iOS 16.4 Coming Soon, and More

Saturday March 25, 2023 6:00 am PDT by
We're still almost six months away from the official unveiling of the iPhone 15 lineup, but it seems like every day we're learning more about what to expect from the next-generation models. Notably, this week gave us our clearest look yet at what appear to be some changes for the volume and mute control hardware. iOS 16.4 and associated releases are also right around the corner with some new ...
iOS 16

Apple Releases iOS 16.4 With New Emoji, Safari Web Push Notifications, Beta Changes, Voice Isolation for Calls and More

Monday March 27, 2023 10:03 am PDT by
Apple today released iOS 16.4, the fourth major update to the iOS 16 operating system that initially came out last September. iOS 16.4 comes two months after the launch of iOS 16.3, an update that added Security Keys for Apple ID. iOS 16‌.4 and iPadOS 16.4 can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. It can take a few minutes...
Hero0009

Best Apple Deals of the Week: Samsung's Smart Monitor M8 Gets Massive $250 Discount, Along With Year's Best AirPods Prices

Friday March 24, 2023 10:23 am PDT by
We saw a lot of great deals on Apple products and related accessories this week, including Samsung's iMac-like Smart Monitor M8 for $250 off, a 30 percent off spring sale at Anker, and the year's best prices on numerous AirPods models. All of these deals are still available to purchase right now, so we're recapping them and more below. Note: MacRumors is an affiliate partner with some of these ...
dynamic island

iPhone 15 Dynamic Island to Include New Integrated Proximity Sensor

Friday March 24, 2023 12:27 am PDT by
This year, all iPhone 15 models will include Apple's Dynamic Island that unifies the pill and hole cutouts at the top of the display, but there will also be a material change to the feature that wasn't included in the iPhone 14 Pro models. According to a new tweet by Apple industry analyst Ming-Chi Kuo, the proximity sensor on the iPhone 15 series will be integrated inside the Dynamic Island ...