The MagFlow Pro external battery, developed by Ugreen, is a portable power device designed to charge smartphones and other devices on the go. It features a unique liquid cooling system called CryoPulse, which uses a copper plate and an aluminum case to help dissipate heat. While it is compatible with phones that support MagSafe, a magnetic charging system used by Apple, it does not guarantee that the phone will accept wireless power. Users are advised to use a MagSafe case or remove their phone’s standard case for optimal performance. The MagFlow Pro includes an integrated USB-C cable, eliminating the need for users to carry an extra cable. It supports up to 45 W of power and claims to charge an iPhone 17 Pro Max to 65% in 30 minutes using a wired connection. The battery has a capacity of 10,000 mAh, weighs 220 grams, and is about 10.8 by 7.1 centimeters in size with a thickness of 1.62 centimeters. Though it is described as compact for travel, it can add noticeable weight when attached to a phone via magnets. A small screen on the side of the battery displays the remaining charge, power level, and the number of charging cycles, offering more detailed information than the usual small LED indicators. The MagFlow Pro can be charged at 30 W, allowing it to be quickly recharged between uses. It also includes an additional USB-C port, enabling users to charge another device at the same time. Priced at 105.99 euros, the MagFlow Pro is currently on promotion, with a recommended retail price of 129.99 euros. While it is not the cheapest option in its category, it is regarded as a well-designed and functional product. One minor issue is that users may hear bubbles when the battery is stuck to the ear, but this does not significantly impact the overall experience of using the device.