The UGREEN 20 000 mAh Two-Way Fast Charging Power Bank (model 25683) is a high-capacity mobile charging companion designed for power users on the go. With a massive 20 000 mAh (74 Wh) battery, this power bank lets you charge your smartphone, tablet or USB-C device multiple times throughout the day. Featuring USB-C input/output and dual USB-A ports, it supports simultaneous charging of up to three devices, ensuring your devices stay powered whether at home, work or travelling.
What sets it apart is the two-way fast charging capability: the USB-C port supports up to 20 W output for rapid charging of your devices, and also up to 20 W input so the power bank recharges quickly when you plug it in. With support for multiple fast-charge protocols (PD 20 W, QC 3.0/22.5 W on USB-A) and extensive safety protections (over-voltage, over-current, over-discharge, short-circuit, over-temperature), you’re getting both power and peace of mind. Compactly sized at just 147 × 72 × 27 mm, it’s easy to slip into a bag or backpack.
Whether you’re out on a long flight, commuting, or simply want reliable back-up power for your mobile gear, this power bank is built to deliver efficient, fast and safe charging in a convenient form-factor.
| Model | PB312 |
| Battery Capacity | 20 000 mAh (3.7 V / 74 Wh) |
| Rated Output Capacity (typical) | 12 500 mAh (5 V/3 A) |
| USB-C Port (Input/Output) | 5 V = 3 A / 9 V = 2.22 A / 12 V = 1.67 A → 20 W max |
| USB-A Ports (Output 1 & Output 2) | 10 V = 2.25 A / 9 V = 2 A / 12 V = 1.5 A / 5 V = 3 A → 22.5 W max |
| Total Output | 5 V = 3 A Max |
| Dimensions | 147 × 72 × 27 mm |
| Recharge Time | ≈ 6 hours with 20 W PD charger |
| Safety Features | Over-charge / Over-discharge / Over-current / Over-power / Over-voltage / Over-temperature / Short-circuit / Electromagnetic-field protection |
| Warranty Terms: | 1-year warranty provided by UGREEN MAURITIUS – 101 Multimedia. |
| Brand | |
|---|---|
| Product Categories | Power Banks |