UGREEN MagFlow Air Magnetic Power Bank Honkai: Star Rail Edition review

The UGREEN MagFlow Air pairs 15 W Qi2 magnetic charging with an ultra-thin 13.9 mm body, wrapped in a distinctive Yao Guang design from Honkai: Star Rail.

UGREEN MagFlow Air Magnetic Power Bank Honkai: Star Rail Edition

UGREEN's MagFlow Air Magnetic Power Bank Honkai: Star Rail Edition, made in partnership with HoYoverse, is a clear example of the ultra-thin power bank trend. The design draws on Yao Guang, the Divine Prognosticator of the Xianzhou Yuhang's Jade Abode-focused fleet, and stands out with an elegant peacock blue finish. The outer surface is finished with sharp laser engraving, while a soft silicone layer on the side that touches the phone resists scratches and limits sweat buildup.

The most impressive part of the design is how compact it is. Despite packing 10,000 mAh inside, the aluminum-alloy frame is only 13.9 mm thick and weighs 213 grams. At 69.8 mm wide, it sits neatly on the back of premium smartphones such as the iPhone 16 Pro or iPhone 17 Pro Max without bumping into the camera module. The thin, light body also means you can slip the phone and power bank into a pocket together without it getting in the way.

Battery cells and Qi2 charging

Many thin power banks on the market use pouch-type Li-Po cells, which can swell after long-term use. UGREEN instead equips the MagFlow Air with two ATL-supplied Dymoncell lithium-ion cells. The 39.2 Wh total comes from connecting two 5,000 mAh cells in series. The metal casing of a Li-ion cell withstands mechanical impact better, and the cells are rated for 500 to 1,000 charge cycles before capacity falls to 80%. At 39.2 Wh, the battery also meets international aviation safety rules, so you can take it into the aircraft cabin.

The UGREEN MagFlow Air Magnetic Power Bank Honkai: Star Rail Edition supports the Qi2 wireless charging standard from the WPC. Traditional Qi charging often suffers from off-center placement that wastes power and generates heat. The MPP protocol on the MagFlow Air avoids this with an N52 magnet array offering up to 8N of pull force, equivalent to holding 800 grams. This design locks the coil into position with less than 0.5 mm of offset, keeping 15 W wireless charging stable at 80% to 88% efficiency. The MagFlow Air also includes a magnetic shield to eliminate the risk of interfering with the phone's OIS optical image stabilization sensor and positioning system.

UGREEN builds in a USB-C cable with a braided nylon jacket. It supports 30 W fast charging in both directions and can clip into a slot to serve as a carrying strap. To keep the body as thin as possible, UGREEN skips a display and uses four LED indicators for battery level, next to a separate magnetic charging status light. Users can also enable a low-current trickle charging mode for wireless earbuds or smartwatches by holding the power button for 3 seconds.

Performance and temperatures

Power delivery on the MagFlow Air is adjusted automatically by the SmartCharge controller to balance efficiency and safety. The power bank can charge at up to 30 W over USB-C using PD and PPS protocols, alongside 15 W magnetic charging. When two wired ports are in use at once, power is split evenly at 7.5 W per port. With one wired and one wireless device, output is 10 W and 5 W respectively. With three devices charging at once, the two wired ports share 10 W while the magnetic pad gets 5 W.

In real-world conversion efficiency, the UGREEN MagFlow Air can fully charge an iPhone 16 Pro about 1.6 to 1.7 times, or an iPhone 17 Pro Max about 1.3 times. On speed, 15 W Qi2 charging takes about 1 hour 54 minutes to take an iPhone 17 Pro from 0 to 50%, while the 30 W cable needs only 28 minutes to reach the same level. The MagFlow Air also supports pass-through charging, meaning you can recharge the power bank while it powers the phone attached to its back.

The MagFlow Air itself can be fully recharged in about 2 hours 18 minutes thanks to its 30 W input. To manage heat, the ThermalGuard system continuously monitors sensors and reduces the load when it detects a risk of overheating. Combined with the fast-dissipating aluminum shell, ThermalGuard kept the MagFlow Air's surface temperature steady at around 34 °C throughout testing.

Verdict

Compared with the standard version, the Honkai: Star Rail edition shares 100% of the same hardware platform, from the ATL cells and the SmartCharge processor to the safety certifications. The standard model costs between 59.99 USD and 79.99 USD, while the Honkai: Star Rail edition runs from 74.99 USD to 89.99 USD. The premium of 15 USD to 20 USD goes toward HoYoverse's licensed artwork and the decorative laser engraving on the aluminum surface.

In everyday use, the thin, light design is a real convenience for office workers on the move, as well as for mobile gamers who hold their phones in landscape without the power bank getting in the way. The UGREEN MagFlow Air Magnetic Power Bank Honkai: Star Rail Edition does have a few minor drawbacks, such as no display for detailed readouts and wireless charging that stops short of the 25 W offered by Qi2.2. Even so, the combination of a 13.9 mm profile, an integrated USB-C cable, and cool operation makes the MagFlow Air a very appealing EDC accessory.

Reviewed by: Hero Association