UGREEN’s MagFlow Pro treats overheating as a design problem worth solving with actual engineering, not just a bigger heat sink. This 10,000mAh magnetic power bank borrows liquid cooling from gaming PCs and squeezes it into a pocket-sized charger, aiming to keep wireless charging fast without turning your phone into a hand warmer along the way.

Qi2 charging has always had a dirty secret hiding under its magnetic convenience. Wireless systems lose up to 30% of their power as heat during transfer, which means a phone sitting at 25W often throttles down within minutes to avoid overheating. UGREEN built the MagFlow Pro around fixing that exact bottleneck rather than just chasing a bigger battery number.

Designer: UGREEN

Inside sits CryoPulse, a cooling system built around a micro-pump that circulates liquid coolant past the charging coil and other heat-generating components. Copper foil spreads that heat further, while a layout that physically separates key parts keeps warmth from concentrating in one spot. It is a scaled-down version of what keeps a gaming rig from throttling under load, just built to survive inside a phone charger.

A transparent panel on the front turns that entire process into something you can actually watch, showing coolant moving through the internal channels while your phone charges. It is an odd, almost theatrical touch for a power bank, but it doubles as reassurance that the system is doing its job. UGREEN calls it the Cyber Window, and it is hard to look away from once it is running.

That cooling translates into real numbers, too. UGREEN claims the system keeps peak surface temperatures on a phone up to 18°F below its own reference benchmark, letting a device hold onto higher wattage for longer instead of stepping down early. In practice, that means someone topping up before a flight or during a commute gets closer to advertised charging speeds instead of a slow crawl once things heat up.

A small display embedded in the shell keeps track of charging wattage, remaining battery percentage, cycle count, and cooling status, turning what used to be a guessing game into actual visible data. Paired with a built-in USB-C cable capable of 30W and a combined output of up to 45W, the MagFlow Pro can charge a phone, tablet, and another accessory simultaneously without demanding a bag full of extra cables.

If the battery degraded quickly, all of those fancy features would be pointless, so UGREEN built the cell around Dymondcell 2.0 protection, retaining more than 80% of its capacity after 800 charge cycles. It also survived seven hours of continuous overcharge testing without failure, a detail aimed squarely at anyone who leaves their charger plugged in overnight out of habit rather than necessity.

At $149.99, the MagFlow Pro costs considerably more than other 10,000mAh power banks on the market, and that price tag puts real weight behind its cooling claims. It is a bet that people charging phones daily care as much about consistent performance and battery longevity as they do about raw capacity, and that a bit of visible engineering can justify paying extra for it.

The post UGREEN’s Power Bank Uses Liquid Cooling, and You Can Actually Watch It first appeared on Yanko Design.

Power banks have spent years being boring on purpose. Black rectangles, white rectangles, the occasional textured finish. The category settled into a kind of utilitarian invisibility, as if the industry collectively decided that anything carrying electrons should look like a bar of soap. SHARGE never got that memo. The Shargeek 300 looks like a prop from a near-future thriller, with transparent panels revealing glowing circuitry beneath, RGB light bars running along its flanks, and a CNC aluminum body that catches light the way expensive things tend to. It belongs on a desk you’d actually want to show people.

Founded in 2020, SHARGE built its identity around the conviction that charging hardware deserves the same design attention as the devices it powers. The original Shargeek 100, launched in 2021, was the proof of concept: a transparent, display-equipped power bank with DC charging that found a devoted audience almost immediately. The Shargeek 300 is what four years of that bet looks like fully cashed in. It pushes 300 watts of total output, enough to charge two 16-inch MacBook Pros simultaneously while still fast-charging a smartphone on a third port. The 24,000mAh battery lands at 86.4Wh, sitting just under the 100Wh threshold airlines enforce for carry-on batteries. Recharge time from flat to full is 75 minutes with a 140W input. The whole unit is roughly the size of a 330ml can of cola. SHARGE spent 40 months getting here, and the result makes most rivals in the category look underprepared.

Designer: Sharge

Click Here to Buy Now: $159 $199 ($40 off) Hurry! Only 6 days left.

That meticulous attention to detail is most obvious in the physical construction. The main body is a matte silver CNC aluminum frame, which is then given a 180-grit sandblasted, anodized finish for a smooth, premium feel. The company’s head of production is even quoted as personally comparing the feel of every unit to an iPhone to ensure they are equally premium. The signature transparent casing is not just a window, but a piece of safety equipment, made from V0 flame-retardant, UL94-certified polycarbonate that resists both scratches and heat. The dual RGB light bars are fully customizable, allowing users to adjust brightness, change colors, and cycle through effects via the onboard display, turning a functional object into a piece of personalized desk art.

Inside that striking shell is technology that sets a new benchmark for portable power. The Shargeek 300 is the first power bank to use the same Full-Tab Battery Cell technology pioneered by Tesla. This design significantly lowers internal resistance compared to conventional cells, a change that unlocks faster charging speeds, higher sustained output, and superior heat dissipation. This internal efficiency is the key to how a device this compact can safely manage a 300W total output without overheating or degrading quickly. The advanced battery structure results in a longer-lasting, more stable power source that can handle the demanding, continuous power draws required by high-performance laptops and other professional equipment, putting truly next-generation power in your hands.

This power is routed through a versatile array of four output ports designed to handle nearly any device. The stars of the show are the two USB-C ports, both of which support the Power Delivery 3.1 standard to deliver a massive 140W of power each. This is what allows the Shargeek 300 to simultaneously fast-charge two 16-inch MacBook Pros at their maximum charging speed. A third USB-A port provides up to 20W for legacy devices and smartphones. The fourth and most unique port is the adjustable DC barrel port, a feature carried over from the Shargeek 100. It now supports up to 140W and its voltage can be manually set between 5V and 28V, unlocking compatibility with a world of gear that USB-C cannot serve, from professional camera equipment to high-performance drones. The 24,000mAh capacity provides enough energy for approximately one full charge of a modern MacBook Pro, six charges for an iPhone 16 Pro, or two charges for an iPad Pro.

The user experience is managed through a 1.9-inch IPS display, which is 60% larger than the screen on the previous model. It provides a level of control that is unheard of in this category. Beyond showing real-time input and output wattage, the display allows you to monitor battery health, track charging cycles, and check internal temperatures. You can use it to precisely adjust the DC output voltage, set a custom welcome message, and configure the RGB lighting. This smart display transforms the power bank from a simple battery into an intelligent power hub. This intelligence extends to its handling of delicate electronics. A dedicated Low-current Mode ensures that devices like earbuds, smartwatches, and fitness trackers receive a safe, optimized charge, preventing the overcharging that can damage the small batteries in those devices.

This combination of raw power and intelligent control is backed by a comprehensive suite of safety features, including overvoltage, undervoltage, short-circuit, and real-time temperature protection. This commitment to safety extends to its travel-readiness. Crucially, the power bank’s 24,000mAh capacity is engineered to a rating of 86.4Wh, keeping it comfortably under the 100Wh limit imposed by airlines for carry-on luggage. This makes it one of the most powerful charging solutions that can be legally carried onto a plane, a critical detail for mobile professionals. The low standby power consumption is another practical benefit, allowing the Shargeek 300 to retain over 90% of its charge after 15 days of inactivity. For anyone who has pulled a power bank from a bag after weeks only to find it unexpectedly dead, this is a genuinely valuable feature.

The Shargeek 300 starts at $199 but is available at a discounted $159 price for earlybird backers. Cobble together $209 and you can get the power bank along with its companion Pixel 140W PD 3.1 wall charger from Sharge with its adorable pixel-matrix display. The Shargeek 300 comes with a 12-month warranty, and ships globally as early as May 2026.

Click Here to Buy Now: $159 $199 ($40 off) Hurry! Only 6 days left.

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