Semi-transparent Xiaomi power bank with up to 212 watts and a color display | Practical review
Compact despite a 25,000 mAh capacity.
Despite its compact measurements, the Xiaomi Powerbank 25000 features a huge battery with a capacity of over 90 Wh. In addition, the powerbank from Xiaomi delivers lighting-fast charging speeds of up to 212 watts and 140 watts of single-charge power, meaning you can also use it to charge laptops.Marcus Herbrich, 👁 Enrico Frahn (translated by Daisy Dickson) Published 🇩🇪 🇭🇺 ...
The Xiaomi Powerbank 25000 comes with two real highlights. Firstly, the rather compact energy supplier with a nominal charge of 25,000 mAh has a color display measuring around 3.3 centimeters diagonally, which shows information such as the current charge status. A second special feature is the powerbank's high output power. The portable charger from Xiaomi is said to work with a maximum of 212 watts. However, this is the total output power using the three built-in connections. This means that up to three devices (2x USB-C, 1x USB-A) can be charged simultaneously using the Xiaomi Powerbank 25000. A power of up to 140 watts available via the USB-C port, which is just as impressive. The high single-charge output power not only enables you to charge smartphones or tablets quickly, but also laptops.
In this practical test, we have taken a closer look at how the Xiaomi Powerbank 25000 performs in everyday use and whether you'll have to face any overheating problems, similar to the Anker Prime 20,000 mAh.
Case - The Xiaomi powerbank with transparent parts
The Xiaomi powerbank is made of plastic and weighs 633 grams. Thanks to its dimensions of 55 x 55 x 160 millimeters, the portable charging station can easily be stowed away in a bag or backpack despite its high nominal charge. Its build quality and appearance are great. We were unable to find out whether the Xiaomi Powerbank 25000's case is protected against water. It is therefore advisable to not use the powerbank in the middle of a rain shower.
A visual highlight is the transparent areas that allow you to see inside the device. It doesn't really matter whether the visible electronics are just for looks, as was the case with the Mi 8 Explorer Edition, or have a real use—the Xiaomi powerbank will make nerd hearts beat faster.
Sustainability
No information on the materials used or their recycling rate has been disclosed by the manufacturer. However, the packaging appears to be plastic-free. The device itself is wrapped in a film, and the rest of the packaging is made of cardboard.
Connectivity - The Xiaomi powerbank supports lots of charging protocols
As the name implies, the Xiaomi powerbank's capacity is 25,000 mAh, divided into five 5,000 mAh lithium-ion batteries. On the case, the manufacturer indicates a value of 90.8 Wh for its mobile charging station, which means it can also be carried in hand luggage when traveling by plane. In addition, the power bank is labeled with a nominal charge of just 14,000 mAh. The latter is probably due to the loss of power that occurs during the conversion process from the input voltage (5 V) for smartphones or tablets and the output voltage of the power bank (3.63 V). As with any charger, this step-up and step-down process results in the release of heat (energy loss). The energy conversion rate for power banks is usually around 75 to 80 percent. This would explain the manufacturer's declaration (3.63 V x 25,000 mAh/5 V = 18,150 mAh - > 18,150 mAh*0.77 =13,976 mAh). Similarly, the stated capacity is around 5,000 mAh at a voltage of 18 volts.
The three installed connections together offer a peak output power of 212 watts (65 watts + 27 watts + 120 watts). This provides enough power to supply two laptops and a smartphone with electricity at the same time. During our test, this worked flawlessly with a Thinkpad Z16, Microsoft Surface Pro 8 and Xiaomi 14T Pro. The powerbank didn't overheat even under full load. Apart from its multi-charge situation, the Xiaomi power bank also boasts impressive key figures. The two powerful USB ports manage a maximum of 140 watts (USB-C1 - 28V/5A) and 120 watts (USB-A, 20V/6A) respectively. Even the third port in the network still provides enough power for many flagship cell phones, such as a Galaxy S24 Ultra or iPhone 16 Pro, with 45 watts (USB-C1, 20V/2.25A).
The Xiaomi Powerbank 25000 is compatible with a wide variety of end devices. The Apple universe (Apple 2.4A) as well as Samsung (Samsung AFC) and Huawei smartphones (Huawei FCP) are covered by its charging protocols. Notebook and Xiaomi devices with HyperCharge also charge very quickly with the PD protocol 3.1 or PD PPS.
Practical use - The powerbank's information display is handy, but not necessary
During everyday use, you can read comfortably from the relatively large panel installed into the Xiaomi powerbank. Even so, the information diplayed by the Xiaomi Powerbank 25000 is rather limited. Users can see the remaining battery capacity in percent and a mAh figure as well as the charging current—unfortunately, Xiaomi doesn't provide a single port-related indication of the current flow, and an indication in watts would also have been clearer. We would also have liked to see more settings options, such as changing the display brightness or display duration, as well as further status information, such as charging cycles and battery status. This leaves us with an overview of the core data and the supported charging protocols, which are highlighted in color as soon as they are used. A physical button below the display serves as an input option.
The Xiaomi powerbank usefully supports the passthrough function. While the powerbank itself is charging, two USB ports remain usable, which can then be used to supply a smartphone or tablet with power. The ports are also spaced far enough apart so that even wider plugs shouldn't be a problem.
End devices with a low power consumption, such as flashlights, toothbrushes or headphones, can also be charged with the Xiaomi charging station. A corresponding low-charging mode is available for this, which can be activated by double-pressing the button.
The maximum input power of the Xiaomi Powerbank 25000 is 100 watts, resulting in a fairly short charging time of around 2.5 hours during our test. If you only have a low-power mains adapter, you may want to charge it overnight.
| 18 watts | 21 to 100 percent | around 4:45 h |
| 67 watts | 30 to 100 percent | around 1:55 h |
| 160 watts | 29 to 100 percent | around 1:35 h |
According to Xiaomi, a total of nine protection mechanisms are implemented in its Powerbank 25000. This is to prevent overvoltage and overcharging or undercharging the batteries. Overheating protection is also on board. However, the powerbank's plastic case never got really hot during our test period—even with three devices charging in parallel.
Pros
+ sleek appearance
+ three USB ports
+ status information via color display
+ high power output
Cons
– limited information displayed
– heavy
– batteries can't be swapped out
Verdict on the Xiaomi Powerbank 25000
The Xiaomi Powerbank 25000 is a real visual highlight with its eye-catching design and transparent parts. On the plus side of this mobile energy storage device is a high output power and support for many charging protocols. For those who only want to charge their smartphone on the go, the new Xiaomi power bank—with its 140 watts of single-charge power—is too much of a good thing. The Xiaomi Powerbank 25000 proves to be an interesting choice as a portable travel companion to quickly supply your laptop and smartphone with energy.
It's a bit of a shame that the information displayed by the built-in color panel is only limited. We would have liked more options and additional key figures here. If you don't think you'll get your money's worth in this respect with the Xiaomi powerbank, then you can also take a look at the Anker Prime.
Price & availability - The Xiaomi powerbank only as an import device
Currently, you can only buy the Xiaomi Powerbank 25000 as an import device. It can be purchased for $105.28 from our lender Trading Shenzhen, for example.
Transparency
The selection of devices to be reviewed is made by our editorial team. The test sample was given to the author by the manufacturer free of charge for the purposes of review. There was no third-party influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review. We never accept compensation or payment in return for our reviews. As an independent media company, Notebookcheck is not subjected to the authority of manufacturers, retailers or publishers.
