At a glance
Expert's Rating
Pros
- 3-in-1
- iPhone fast charging: 15W (Pro) or 25W (Ultra)
- Apple Watch fast charging
- High capacity battery
- Kickstand
Cons
- Older AirPods Pro connection erratic
Our Verdict
The Kuxiu K1 folds up into a neat pack-of-card size that will fit in your pocket and twists into a versatile and high-performance multi-Apple-device charger. Owners of the iPhone 16 or later, or people Considering updating their phone, should choose the K1 Ultra that charges at 25W, while the K1 Pro has a 15W top speed.
Price When Reviewed
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Best Pricing Today
Best Prices Today: Kuxiu K1 Pro 15W Fast Charging 3-in-1 MagSafe Power Bank
This apparently nondescript power bank looks like a chunky iPhone power bank or an Amex Black Card member’s pack of cards. But manipulate it like a Rubik’s Cube—it even clicks like one—and it transforms into an adaptable charger for iPhone, Apple Watch and AirPods.
It boasts a back-stand so can be a regular magnetic iPhone charging stand at home as well as a powerful battery pack on the road.
It is available in two battery capacities—the familiar 5000mAh (5K) and 10000mAh (10K) varieties—and at two speeds: 15W K1 Pro and 25W K1 Ultra.
Simon Jary
Design
The Kuxiu K1 Pro and Ultra are slabs of metal measuring not much more than a pack of cards and weighing little more.
- 5000mAh (19.35Wh): 4.1 x 2.7 x 0.6 inches (10.5 x 6.9 x 1.5cm); 6.4oz (182g)
- 10000mAh (38.7Wh): 4.1 x 2.7 x 0.8 inch (10.5 x 6.9 x 2cm); 8.9oz (253g)
The back section can rotate up to 90 degrees, revealing a circular indent that will charge either an Apple Watch or wirelessly chargeable AirPods case (the AirPods Pro 2 with MagSafe Charging Case works best). My AirPods Pro 1 normally charge wirelessly when sat on a Qi pad but the connection was erratic on the K1. The AirPods Pro 2 with MagSafe Charging Case use MagSafe so connected straight away.
If your AirPods case isn’t compatible with wireless charging you can connect a cable to the power bank’s USB-C port and charge that way.
You can charge two iPhones in the same way: one wirelessly and one via the USB-C port.
Simon Jary
When the iPhone is charging in portrait orientation, the Watch drapes over the corner of the back section. When the iPhone is in landscape mode it hangs off the top corner.
There are four small LEDs at the top of the sliding section to indicate the power bank’s remaining charge.
The K1 clamps onto an iPhone with a vengeance—it hosts 16 N52 magnets—and won’t let go till you prise it apart, making it a dependable portable solution that won’t separate when pulled from your pocket while charging the phone.
Simon Jary
Performance
In our tests the 10K Kuxiu K1 Pro power bank performed admirably, charging a spent iPhone 16 Pro from 0 to 100% and then, once the battery in the iPhone had depleted again, it charged another 70%. That puts it near the top of our magnetic charging charts, beaten only by a couple of the less versatile magnetic power banks, such as the Anker Zolo 10K Magnetic Power Bank (191%) and EcoFlow RAPID Magnetic Power Bank 10K (190%). It matches the Anker Qi2 MagGo Power Bank (10K) at 170%, which is impressive as it’s the only one of these can charge three devices at the same time.
In terms of charging speed, the K1 Pro uses the Qi2 wireless tech that matches Apple’s MagSafe at 15W and beats away the merely “MagSafe-compatible” 7.5W chargers. The newer K1 Ultra utilizes the Qi2.2 tech that can output at up to 25W for iPhone 16 and later—iPhone 12-15 will charge at 15W. We’d opt for the K1 Ultra even if your iPhone is currently pre-16 as the 25W will be ready for when you upgrade.
While a 15W charger takes around 45 minutes to charge an iPhone from 0& to 50%, a 25W charger completes the same mission in just over 30 minutes.
Attach a device via the power bank’s USB-C port and you’ll get a faster 20W connection. Some power banks can wired charge at 30W but 20W is still enough to fast-charge an iPhone. The power bank is charged itself at 18W.
The Apple Watch charging pad is rated at 5W, which is enough to fast-charge the wearable although it is not marketed as officially Made for Watch.
Kuxiu
The 15W Kuxiu K1 Pro, pictured above, is available in three colors, including Black and Desert Titanium, showing its roots of original launch with the iPhone 16 series. The 25W Kuxiu K1 Ultra, pictured below, is available in two colors: Black and iPhone 17-friendly Cosmic Orange.
Kuxiu
Alternatives to the K1
We’ll look at multi-device chargers rather than just magnetic power banks with USB-C ports or cables as the Kuxiu K1 is unlikely to interest anyone without an Apple Watch. There aren’t as many power banks for the Apple Watch as there are for the iPhone, so the competition is narrow.
I’m a big fan of the Anker MagGo Power Bank 10K for Apple Watch, which is a stubby stick with a pull-out Watch charging pad, but aside from its built-in USB-C cable there’s no iPhone wireless charging going on.
A closer match is the OneAdaptr OneGo 3-in-a travel power bank, which also folds out into a stand. Like the K1 it has a 10K battery but it its iPhone charging pad maxes at a slow 7.5W compared to the fast 15W Qi2 charger on the Kuxiu K1 Pro or super-speedy 25W on the K1 Ultra.
Read our Best Apple Watch chargers and power banks roundup for more options.
Simon Jary
Price
There are list prices and lower real prices, and these seem to fluctuate, so your best bet is to check the prices in our Price Comparison boxes here in this review, which show the 10K models. for the 5K K1 Pro check the links below. This is more complicated than it needs to be, but it does keep the price you pay as low as possible!
The 5K Kuxiu K1 Pro has a list price of $99.99 / £76 / €86,95. The 10K K1 Pro is priced at $109.99 / £84 / €95,95. However, Kuxiu seems to have a permanent serious discount on its products. At the time of writing the 5K was priced at $56 / £43 / €49 and the 10K at $67 / £51 / €59. It is available in Black, Gray or Desert Titanium colors.
The K1 Ultra (10K only) is priced at $99.99 / £76 / €86,95. At the time of writing the it was priced at $79 / £61 / €69. It is available in Black or Cosmic Orange.
Amazon also stocks the 5K K1 Pro and 10K K1 Pro, plus the 10K K1 Ultra.
For such a high-performing power banks these are reasonable prices. Choosing between the two probably won’t come down to price but size. The 5K K1 is about 0.2 inches slimmer but doesn’t offer the impressive battery capacity of the 10K model.
Simon Jary
Should you buy the Kuxiu K1 Pro and K1 Ultra 3-in-1 MagSafe Power Banks?
The Kuxiu K1 (Pro and Ultra) folds up into a neat pack-of-card size that will fit in your pocket (a large pocket for the 10K models) and twists into a versatile and high-performance multi-Apple-device charger when you need it on your travels or act as a handy iPhone stand back at base or in the café.
If you can stretch to the K1 Ultra you’ll future-proof your purchase for iPhones that support 25W charging, although the Ultra is available with the larger 10K battery only.
Best Prices Today: Kuxiu K1 Pro 15W Fast Charging 3-in-1 MagSafe Power Bank
Author: Simon Jary, Contributor, Macworld
Simon has over 30 years of expert experience testing and reviewing ever-smaller and more powerful tech accessories, from USB-C and Thunderbolt docks to chargers, batteries, hubs and adapters. A former Editor of Macworld, he has contributed to PCWorld, Tech Advisor and TimeOut, as well as national newspapers such as The Times, Independent and Telegraph.