I recently had the opportunity to review the UGreen BP312 power bank, a device that boasts an impressive 20,000mAh capacity and supports fast charging up to 22.5W.
The BP312 is a well-designed power bank, with a compact body made of high-quality matte plastic. The device weighs in at a reasonable weight, considering its large capacity, and measures 147x72x28mm. It’s available in three colors: rose, purple, and black. The power bank’s exterior is smooth to the touch, with a subtle texture that provides a secure grip. However, I did notice that the surface is prone to fingerprints and smudges.
The UGreen BP312’s design is sleek and modern, with a hidden digital LED display on the front panel that shows the remaining battery life in percentage. The display is activated by a mechanical button, which also serves as a power button and mode switch. The power bank’s build quality is excellent, with a robust construction that inspires confidence. The device is made of high-quality materials, and the attention to detail is evident in the precise fit and finish of the various components.
The power bank’s dimensions are comparable to those of a smartphone, such as the Apple iPhone 16 Pro, although it’s slightly thicker. The device is easy to carry in a backpack or purse, but it may be too large for a pocket. The UGreen BP312 is also approved for carry-on luggage on airplanes, making it a great travel companion.
The power bank’s design is functional and practical, with a single USB-C port and two USB-A ports. The USB-C port can be used for both input and output, making it convenient to charge the power bank and other devices. The USB-A ports are designed for charging external devices only and can deliver up to 22.5W of power.
Performance and Charging Speed
The UGreen BP312’s performance is impressive, with a nominal capacity of 13,059mAh at 5V 3A, which translates to a respectable 65.3% efficiency. The power bank supports various fast-charging protocols, including Power Delivery 3.0, Quick Charge 3.0, Huawei Supercharge, and Samsung AFC. In my tests, the power bank was able to charge an Apple iPhone 16 Pro from 0 to 100% in approximately 1 hour and 35 minutes.
The UGreen BP312 can also charge other devices, such as the Xiaomi 15, which takes around 1 hour and 45 minutes to reach full capacity. The power bank’s capacity is sufficient to charge most smartphones at least two times, and in some cases, up to 2.53 times. However, the charging speed may vary depending on the device being charged and the power bank’s output.
The power bank’s charging speed is decent, but not exceptional. The device takes around 5.5 hours to fully charge, which is relatively long. However, this is not uncommon for power banks of this capacity, and the trade-off is a more compact design and lower weight.
Safety Features and Protection
The UGreen BP312 has a multi-level protection system that prevents damage from overcharging, short circuits, and overheating. The power bank also features a low-voltage protection circuit that prevents damage to connected devices. In my tests, the power bank performed flawlessly, with no signs of overheating or malfunction.
The UGreen BP312’s safety features are designed to provide peace of mind, and the device has undergone rigorous testing to ensure its reliability and performance. The power bank is also certified by various regulatory bodies, ensuring that it meets strict safety standards.
The power bank’s protection circuitry is designed to prevent damage from external factors, such as short circuits or overvoltage. The device also has a built-in thermal management system that helps to regulate its temperature during charging and discharging.
Final Thoughts — Price & Value
The UGreen BP312 is a solid power bank that offers excellent value for its price. With a capacity of 20,000mAh and support for fast charging, this power bank is perfect for travelers, commuters, and anyone who needs a reliable power source on the go. The device’s compact design, robust construction, and safety features make it an attractive option for those who want a hassle-free power bank experience.
While the BP312 may not be the cheapest power bank on the market, its price is competitive, especially when considering its features and performance. The device is available on AliExpress with prices starting from around $25. Overall, I highly recommend the UGreen BP312 to anyone looking for a reliable and high-capacity power bank.

