Power banks are not typically the most exciting pieces of technology. You charge them, toss them in a bag, and hope you remember them when your phone starts running low. UGREEN is trying something considerably different with the MagFlow Pro. Alongside a 10,000mAh battery, Qi2.2 wireless charging and 45W wired charging, UGREEN has put an actual liquid-cooling system inside its portable battery.
It sounds excessive until you consider one of the biggest problems I have experienced with wireless charging: heat. My phones tend to get noticeably warm when I use wireless portable chargers, and the chargers themselves can heat up too. After spending time with the UGREEN MagFlow Pro, primarily paired with my Samsung Galaxy S24, the biggest takeaway is simple: it actually works.
A Power Bank With Liquid Cooling
The MagFlow Pro uses UGREEN’s CryoPulse cooling system, which incorporates a micro-pump that circulates coolant inside the power bank. The system is designed to pull heat away from components, including the wireless charging coil. UGREEN also combines the liquid cooling with additional thermal management inside the device.
This is not simply an animation pretending that something interesting is happening inside. There is a transparent window on the front of the MagFlow Pro that allows you to actually see the coolant circulating while the system is operating. It is easily one of my favorite visual aspects of the power bank. Most portable batteries are essentially featureless boxes, so being able to see part of the cooling system in operation gives the MagFlow Pro some personality.
I noticed the difference during actual use. My Galaxy S24 stayed considerably cooler than I am accustomed to when using portable wireless chargers. The MagFlow Pro itself also avoided the uncomfortable heat I have experienced with some other charging solutions.
UGREEN claims CryoPulse can significantly reduce heat buildup compared with conventional 25W wireless charging. Those numbers are manufacturer claims, but my experience supports the broader point that the cooling system makes a noticeable difference. Other independent testing has similarly found that the MagFlow Pro remains impressively cool during wireless charging.
That doesn’t necessarily mean the power bank will maintain its maximum charging rate indefinitely. Charging speeds can still fluctuate depending on the connected device, battery percentage, temperature and power management. Independent testing has also observed the MagFlow Pro reducing its charging output during longer sessions. What I can say from my experience is that temperature management is excellent.
More Than a Wireless Charger
Liquid cooling might grab the headlines, but the MagFlow Pro would not be nearly as useful if that were its only trick. UGREEN equipped it with a 10,000mAh battery alongside up to 25W Qi2.2 wireless charging on compatible devices and up to 45W wired USB-C output.
There is also an integrated braided USB-C cable. I really like this addition because it means the MagFlow Pro isn’t limited to devices that support magnetic charging. If you have a USB-C device without a magnetic back, you can use the attached cable and treat the MagFlow Pro like a traditional power bank. It also means there is one less cable that you need to remember to pack.
A separate USB-C port provides another charging option and is also used for charging the power bank itself. Both the integrated cable and USB-C connection help make this a much more versatile product than something designed exclusively around magnetic wireless charging.
That versatility became one of the strongest aspects of the MagFlow Pro during my time with it. Instead of carrying a wireless battery for my phone and another charger or cable for everything else, I have multiple charging options built into one relatively compact device.
The Display Is Actually Useful
UGREEN has also included a small smart display on the side of the MagFlow Pro, and this is another feature I ended up appreciating more than I expected. Instead of relying on a handful of LEDs to estimate how much battery is left, the display provides actual information about what the power bank is doing.
The display can show remaining battery capacity and live input or output wattage, allowing you to see how much power is actually moving between devices. Additional information such as battery cycle data and cooling status can also be displayed. It is a small addition, but it makes the MagFlow Pro feel considerably more sophisticated than a conventional portable battery.
There is an important distinction between this screen and the transparent CryoPulse section on the front. The side display is where you get useful charging information, while the front window is primarily there to let you see the cooling system. I like having both. One provides practical information while the other gives the MagFlow Pro a distinctive visual identity.
Compact, But It Takes Some Getting Used To
Despite everything UGREEN has packed inside, the MagFlow Pro isn’t an especially large power bank. It measures approximately 108.4 x 70.5 x 16.2mm and weighs around 230 grams. On paper, that is reasonably compact for a 10,000mAh battery containing this much hardware. Using it attached to a phone is a different experience.
When I first put the MagFlow Pro on the back of my Galaxy S24, it felt bigger than I expected. The power bank isn’t necessarily large by itself, but adding that extra size and weight to the back of a phone is immediately noticeable. It took me about a day before I really became accustomed to using my phone with it attached.
There is some personal context worth mentioning here. I don’t regularly use magnetic portable chargers, so someone who already carries a magnetic 10,000mAh battery may adjust much faster than I did. Once I became accustomed to it, the size stopped bothering me nearly as much. Still, buyers expecting the MagFlow Pro to disappear behind their phone should temper those expectations.
The tradeoff is that you’re carrying 10,000mAh of additional battery capacity, multiple wired charging options, a display, and an active cooling system. Considering everything inside, UGREEN has done a good job keeping the overall package manageable.
Reliable Performance Matters More Than Gimmicks
A transparent liquid-cooling system is going to attract attention, but reliability ultimately matters much more in a product like this. Throughout my time using the MagFlow Pro, it has simply done what it is supposed to do.
Performance has been steady, charging has been reliable, and I haven’t found myself fighting with the device to get it to work properly. That consistency is important because a portable charger is something I want to be able to grab before leaving the house without wondering whether it will work when I need it.
That combination of reliable performance, strong build quality, and multiple charging options is where the MagFlow Pro starts to come together. Qi2 wireless charging handles compatible devices, the integrated USB-C cable covers hardware that isn’t magnetic, and the additional USB-C port adds another option when needed.
There is one limitation worth understanding. The 25W wireless and 45W wired ratings should not be interpreted as 70W of simultaneous output. When multiple devices are connected, available power is divided and charging speeds are reduced. This is better viewed as a high-performance single-device charger that has the flexibility to charge additional hardware when necessary.
Price Is the Biggest Hurdle
This is also where things get complicated. UGREEN lists the MagFlow Pro at an MSRP of $149.99, although at the time of writing it is available directly from UGREEN for $99.98. That puts it firmly into premium power-bank territory.
There are much cheaper 10,000mAh power banks available, including UGREEN’s own standard MagFlow. If all you need is additional battery capacity and USB-C charging, it would be difficult to justify paying extra specifically for the Pro.
The value proposition makes considerably more sense if you regularly use wireless charging. CryoPulse addresses a problem I have personally experienced with other wireless chargers, and that is excessive heat. Add the integrated USB-C cable, 45W wired charging, smart display, and strong build quality, and you’re paying for the complete package rather than battery capacity alone.
At its full $149.99 MSRP, however, that premium is difficult to ignore. The current $99.98 price makes the MagFlow Pro substantially easier to consider.
Pros
- CryoPulse liquid cooling makes a noticeable difference in temperature
- Phone remains considerably cooler during wireless charging
- Reliable and consistent performance
- 10,000mAh battery capacity
- Up to 25W Qi2.2 wireless charging on compatible devices
- Up to 45W wired USB-C charging
- Integrated USB-C cable
- Useful smart display with real-time charging information
- Strong build quality
- Compact considering the amount of technology inside
- Transparent cooling window is genuinely interesting to watch
- Wired charging makes it useful even without a magnetic device
Cons
- Feels fairly substantial when attached to a phone
- Takes some adjustment if you aren’t accustomed to magnetic power banks
- $149.99 MSRP is expensive for a 10,000mAh power bank
- Maximum charging rates depend heavily on the connected device
- Charging multiple devices significantly reduces available output
- CryoPulse may be unnecessary if you primarily use wired charging
Final Thoughts
The UGREEN MagFlow Pro initially sounds like the kind of product created because someone asked whether liquid cooling could be put inside a power bank rather than whether it should be. After actually using it, CryoPulse makes considerably more sense.
My Galaxy S24 staying noticeably cooler during charging is what ultimately sold me on the idea. The fact that I can actually see the cooling system operating is cool from a technology standpoint, but it wouldn’t matter much if the system didn’t produce real results.
The combination of effective cooling, reliable performance, 10,000mAh capacity, Qi2 wireless charging, 45W USB-C charging, an integrated cable, and a genuinely useful display makes the MagFlow Pro an impressive all-in-one portable charging solution. I recommend picking it up if the price tag is not too much for you.
