Goui Prime 20 is a high-performance powerbank with a capacity of 20,000 mAh. Its casing has a compact, lightweight construction and features three ports, so it can charge up to three devices simultaneously. With Power Delivery and Quick Charge 3.0, it uses two of the fastest USB technologies currently available. Its charging power output is 18 watts. The practical powerbank itself can be charged with the included micro USB cable or via the USB-C port.