Today is a day that ends with Y, which must mean it’s time for another power bank review! Today it’s UGreen’s turn magnetic flow airIt's part of a small group of products in the company's new “Air” series, which focuses on thin and light devices for mobile users.
This 10,000mAh model has a few tricks up its sleeve, from Qi2 wireless charging to pass-through support, that look interesting enough to be worth reviewing. In 2026, will it stand out among many similar power banks?
The short answer is yes. The longer answer follows.
Design and features
The Magflow Air is a simple, minimalist rectangle available in three colors: grey, blue and white. The gray version I bought looks the best so far, at least in my opinion. In terms of size and weight, it's not the thinnest or lightest 10,000mAh power bank I've used, but it's far from the largest or heaviest either.
There's a USB C cable in the box, and a short cable built into the bottom edge of the power bank. It's just the right length to fit comfortably into my phone without flopping around, and it snaps securely into the cavity on the side to keep things tidy and allow it to double as a strap.
Personally, I wouldn't choose to wiggle my power bank through the cable like this, but the connection feels secure enough that I wouldn't worry about it coming off if I did.
Most of the time you'll probably end up using the built-in cable, but there's also a USB C outlet next to it. For example, it's what I use to charge my Garmin watch charger, which has a weird proprietary connector.
Most of the space on the front is taken up by the Qi2 ring, which sits on top when you're charging your phone (or other device with wireless charging capabilities). The surface is slightly grippy, which helps prevent objects from sliding around, but if you have a Magsafe-compatible device, you don't need it: the magnets are strong enough to hold it in place.
In theory, Qi2 allows up to 25W wireless charging on any compatible device, including the latest Apple, Samsung and Google phones, but the Magflow Air's maximum power is 15W. For any device that doesn't support Qi2, it will drop back to the older, slower 5W speed.
There's not much to report in terms of design: apart from the power button on one side and a row of five LED lights on the bottom. Four of the LEDs give you a rough idea of remaining battery life, while another lights up when wirelessly charging.
The power bank supports charging up to three devices at the same time, two of which are wired and one wireless. This is a great option if everything is going great at the end of the day and you just need a little extra energy for everything, but it has its limitations. More in the testing section below
Specification
|
aspect: |
112 x 70 x 14 mm (4.4 × 2.8 × 0.6 inches) |
|
weight: |
213 grams (7.5 ounces) |
|
Charging options: |
USB C outlet, built-in USB C cable, wireless |
|
capacity: |
10000mAh |
|
Maximum USB C output: |
30W |
|
Maximum wireless output: |
15W |
|
Max USB C input: |
30W |
|
Magsafe compatible? |
Yes |
|
Pass-through charging? |
Yes |
test
As usual when reviewing power banks, I tested the Magflow Air in two different ways: on a bench at home and in the real world.
From empty, a full charge from a high-speed wall charger takes two hours and ten minutes. When the power bank is nearly fully charged, its power consumption reaches 28 watts, which is reduced as expected.
Charging a laptop with a power bank of this size is quite demanding, but it works quite well: it takes 90 minutes to fully drain the power bank with the laptop in sleep mode, as it adds a little over 50% extra charge. Until near the end, the output power was just over 24W.
I then used the Magflow Air to charge a few smaller devices: an iPhone, Galaxy S24+, and a Garmin running watch. Starting with a fully charged power bank, I charged each device from 25% to 80%, testing both wireless and wired charging when possible.
There's no difference between charging from the built-in cable or using a separate cable that plugs into a USB C outlet. You can use whichever you like as long as you have the right cable.
Not only is wireless charging slower, it's also inherently less efficient than wired charging. For the MagFlow Air, this manifests itself in two ways: the power bank gets significantly hotter when charging wirelessly, and it uses more of its own battery to charge each device.
|
equipment |
Charging type |
Time required to charge from 25% to 80% |
Batteries used approx. |
maximum output |
|---|---|---|---|---|
|
Lenovo Thinkpad X1 Carbon |
cable |
90 minutes |
100% |
24W |
|
Apple iPhone 16 |
cable |
41 minutes |
30% |
19W |
|
Apple iPhone 16 |
wireless |
1 hour 45 minutes |
40% |
– |
|
Samsung Galaxy S24+ |
cable |
31 minutes |
35% |
27W |
|
Samsung Galaxy S24+ |
wireless |
1 hour 50 minutes |
45% |
– |
|
Garmin Forerunner 570 |
cable |
36 minutes |
1.6W |
I also tested pass-through charging, a useful feature that allows you to charge your device from the power bank while also charging the power bank itself. Many people don't support this feature, or it's so slow that it's basically useless, but that's not the case here.
To use it, plug the built-in cable into the wall charger, then connect whatever you want to charge to a USB C outlet and/or wireless ring. Testing it with my phone, it happily charges via both wireless and USB C cables, while the power bank itself charges from the wall.
The Magflow Air's input power drops from 28W to 13W (wireless) or 17W (wired), roughly doubling the time it takes to fully charge, but it's still very reasonable if you only have one outlet and multiple devices to charge.
You can even charge two other devices at the same time as the power bank: one wireless, the other wired. Charging speed is further reduced, but it works: that's faster than I can say for most similar power banks I've used.
My final bench test was charging three devices simultaneously: two phones with cables and a pair of wireless AirPods. The phone charges significantly slower, but at least everything charges, and I was able to get everything from near empty to 80% or above before the power bank ran out of juice.
In the real world, I took the power bank on two different hikes this month: an overnight walk with my brothers, and a weeklong hike with my partner.
In both cases I used it to top up my phone on buses and trains to and from the trails and at the end of long walking days along the way. It performed exactly as expected and bounced around in my backpack for days without any issues.
The power bank recharged my phone nearly twice per charge as long as I used a cable instead of a wireless charger. This is exactly what I expected from a 10,000mAh power bank with a good built-in battery.
Get regular updates on the latest happenings in travel technology and remote work
News, reviews, recommendations and more from here and around the web
Please enable JavaScript in your browser to submit the form
judgment
Overall, while there is nothing particularly unusual or revolutionary about UGreen magnetic flow airit does what it says on the box and is a power bank I would happily recommend.
It's the right size, weight, and capacity for traveling, hiking, or general commuting, and can easily charge almost any phone twice when you don't have an outlet. A built-in USB C cable means you have one less thing to remember, giving you the flexibility of wireless charging and a separate USB C socket when you need it.
In my testing, it came very close to the advertised 30W input and output power, which means fast wired charging is possible on most devices and there's even enough power to fully charge a laptop in a reasonable amount of time if needed.
Pass-through charging works great and is much better than similar power banks I've used (this is just an example). The MagFlow Air feels sturdy, well-made, reliable, and hasn't worn out after a week in my backpack.
My only real issue with this power bank is that it's a strange decision to limit the Qi2 output to 15W instead of the 25W it's capable of. It's still better than old school wireless charging, but wired charging is faster and I find I reach for the cable whenever I have the option.
That said, I've always been happy with the UGreen gear I've used, and at full retail, this represents pretty reasonable value for what you get. Buying it during one of the company's regular sales can feel like a great deal.
