Macworld

At a glance

Expert's Rating

Pros

  • Large battery capacity
  • Top performance
  • 25W wireless or 45W wired charging
  • Built-in USB-C cable
  • Liquid cooling tech
  • Digital display

Cons

  • No kickstand

Our Verdict

With the best battery performance we’ve measured from a 10K power bank, genuinely fast 45W wired charging, and a built-in USB-C cable for convenience, the Ugreen MagFlow Pro is a compelling pick—especially if a kickstand isn’t a priority for you.

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What is it? A high-capacity power bank with liquid cooling that magnetically connects to your iPhone for up to 25W wireless charging with an integrated 45W USB-C cable and an extra USB-C port for wired power output/input.

Who is it for? Owners of compatible iPhone 16, 17 and 18 models that support 25W Qi2 charging will get the most from it.

Who shouldn’t buy it? Older iPhones (iPhone 15 and earlier) that have wireless charging limited to 15W, and iPhone 14 and earlier that have Lightning instead of the latest USB-C charging port.

25W has become the benchmark for magnetic power banks, even if that top speed is restricted to iPhone 16 and later. If you’re due an upgrade, a 25W charger like this one means you’re covered for faster wireless charging as soon as you trade up.

The Ugreen MagFlow Pro is a 10,000mAh magnetic wireless portable charger that pairs its 25W wireless output with a genuinely fast 45W USB-C port and a built-in USB-C cable—a combination that makes it one of the more versatile chargers we’ve tested. Behind that speed sits Ugreen’s CryoPulse TEC Active Cooling, a thermoelectric cooling module designed to keep the charging surface from overheating during high-power wireless charging.

25W wireless charging generates real heat, and without adequate cooling an iPhone can slow down or even stop charging. Ugreen’s approach to managing that heat is notably more aggressive than most with both a fan and liquid cooling.

Power bank specs
  • Capacity: 39.2Wh (10,000mAh)
  • Input charger: USB-C (30W)
  • Output charger: Wireless (25W) & USB-C (45W)
  • On test charged iPhone to: 208%
  • Weight: 8.29oz (235g)
  • Dimensions: 4.3 x 2.8 x 0.63 inches (108 x 71 x 16mm)
  • Colors: Gray

Simon Jary

What is the exact battery capacity of the Ugreen MagFlow Pro?

10,000mAh (10K) remains the largest size you can comfortably clamp to a MagSafe iPhone without it feeling too bulky to pocket. If you want something more compact, a 5000mAh (5K) power bank is worth considering instead but you’ll get fewer recharges from the smaller portable charger. Read reviews of all the best magnetic power banks we’ve tested, both 5K and 10K.

It’s worth noting that not every “10K” power bank has the same actual capacity—watt hours (Wh) is a more precise measure. The Ugreen MagFlow Pro’s 39.2Wh is at the higher end of what we’ve tested and above the average 10K capacity of 38.2Wh.

How fast is the Ugreen MagFlow Pro?

For wireless output, the MagFlow Pro is rated at Qi2.2’s top 25W speed. Only iPhone 16 and later can draw the full 25W; older models, along with the 17e, are capped at 15W, and the iPhone Air at 20W. The difference between 25W and 15W wireless charging is about 15 minutes for the iPhone to reach 50%—30 minutes vs 45 minutes.

The MagFlow Pro’s standout feature is not just its 25W wireless speed. Its 45W USB-C port is matched only by the Anker MagGo Power Bank 2 Pro and Baseus PicoGo AM52 among the chargers we’ve tested. Unlike the Anker, though, the Ugreen includes a built-in USB-C cable (also 45W capable), so there’s no need to carry a separate one—a genuine convenience.

That integrated cable also gives you three simultaneous charging options: wireless, the built-in USB-C cable and the USB-C port. As with most multi-device chargers, though, the total output falls when more than one device is connected—in this case to just 15W. That can still be handy for topping up an Apple Watch or AirPods alongside your iPhone. You can also charge an AirPods case on the wireless charging surface when your iPhone isn’t attached.

Apple now says the iPhone 18 series can reach 50% charge in 15 minutes with a 60W charger (and an iPhone 17 in 20 minutes with 40W), so the high USB-C power output rating comes into its own with the newer iPhones.

Input on the MagFlow Pro is rated at 30W—slower than the Anker MagGo Power Bank 2 Pro’s 45W input, meaning it’ll take a bit longer to recharge the power bank from empty, though that’s unlikely to matter unless you’re in a hurry.

Simon Jary

Is the Ugreen MagFlow Pro’s active cooling effective?

The CryoPulse TEC Active Cooling system is the MagFlow Pro’s defining feature, combining an active micro‑pump, VC copper heat‑spreading foil, and a separated internal layout to circulate coolant directly at the source of heat. Rather than solely relying on passive airflow or a standard fan alone, it uses thermoelectric cooling to actively draw heat away from the charging surface—bringing the center temperature down to as low as 51.8°F, cooler than we’ve measured on most competing chargers.

A copper foil spreads heat across the power bank, and then the liquid layer provides active cooling, before the power bank’s aluminum shell provides more traditional passive cooling.

That cooling power comes with a trade-off: the MagFlow Pro’s 15dB fan is a little noisier than what we measured on the Anker MagGo Power Bank 2 Pro and other portable chargers with built-in fans. It’s not disruptive at a normal working distance, but it’s more noticeable close up, and it’s worth knowing before you decide where to place it while charging. We tested three units to check whether the fan noise was consistent. The third unit was quieter, but we heard a slight buzzing from the other two, so it’s worth noting.

Ugreen claims you can see the active liquid cooling through the power bank’s large screen on its front, but I didn’t really see much going on there—maybe my unit didn’t get hot enough for the liquid cooling to kick in. There’s some movement but you’d have to be bored to watch it for very long. Ugreen says the liquid-cooling system consumes as little as 0.02W, so it shouldn’t noticeably affect charging speed or battery capacity.

How well does the Ugreen MagFlow Pro’s battery perform?

At Macworld we produce a battery performance report for every power bank that passes through our labs, draining an iPhone to 0% and measuring how many charge cycles the power bank can deliver before it’s empty itself.

The Ugreen MagFlow Pro posted the best score we’ve recorded from a 10,000mAh power bank: 208%, ahead of the average 10K score of 174% and slightly ahead of the Anker MagGo Power Bank 2 Pro’s 199%. That’s a strong result, and likely a reflection of how effectively its active cooling keeps charging efficient rather than wasteful through heat. It’s actually a straight tie with Ugreen’s own $79 MagFlow Air Magnetic Power Bank, which is slower at 15W but slimmer at 13.9mm.

The Ugreen MagFlow Pro (top) is slimmer than its rival Anker MagGo, although a little longer.

Simon Jary

What’s so great about the MagFlow Pro’s design?

At 0.63 inches (16mm) thick, the MagFlow Pro is slimmer than the Anker MagGo Power Bank 2 Pro (0.7 inches/17.8mm), though not as thin as the semi-solid-state Kuxiu S4 power bank (0.53 inches/13.7mm). It’s a touch longer but shallower than the Anker, and at 235g it’s the heaviest of the three we’ve compared here—though that extra weight buys you the integrated USB-C cable the Anker lacks and is definitely worth it (plus who can distinguish a 15g of weight in their hand or pocket?).

The cable can plug into the portable charger’s spare USB-C slot to form a loop that you can use as a handy carry strap.

Simon Jary

Unlike the Anker MagGo Power Bank 2 Pro and Kuxiu S4, the MagFlow Pro doesn’t include a built-in kickstand, so you won’t get the same free-standing viewing angles or StandBy Mode without a separate stand.

The MagFlow Pro is currently available in one color: Gray. It’s compatible with any iPhone from iPhone 12 onward, aside from the MagSafe-less iPhone 16e. If you fancy a similar power bank in more appealing colors, consider the Anker MagGo Power Bank 2 Pro.

The MagFlow Pro features a color digital display that shows battery info, real-time power, and charging status. It’s a little small but that maintains the power bank’s overall slimness.

Simon Jary

How much does the Ugreen MagFlow Pro Power Bank cost?

The Ugreen MagFlow Pro Power Bank is priced at $149.99 or £99.99, which is at the pricier end of the magnetic wireless power bank market. However, at the time of writing, Ugreen was offering the MagFlow Pro 10K for $99.98 with a coupon, with a similar price available at Amazon.

For more options we have tested and reviewed the best magnetic wireless power banks.

Should you buy the Ugreen MagFlow Pro Power Bank?

With the best battery performance we’ve measured from a 10K power bank, genuinely fast 45W wired charging, and a built-in USB-C cable for convenience, the Ugreen MagFlow Pro is a compelling pick—especially if a kickstand isn’t a priority for you. The active cooling system does its job well, even if the fan runs a little louder than we’d like. If you want maximum charging performance in a slim, cable-included package, this is one of the strongest 10K magnetic power banks around.