The Powerology 20000 mAh power bank packs everything—from high capacity to top-notch charging technology—to power the devices well. Whether for work, travel, or outdoor activities, the 20,000 mAh, high-capacity charger charges any smartphone, tablet, or other device fast. Output: USB-C output: USB-C cable internal proprietary PD30W multi-voltage (5V/3A, 9V/2A, 12V/2.5A, 15V/2A, 20V/1.5A) for super-fast and flexible charging. The speed dimension of this power bank is classified between 18 W and above, where it features QC3.0 18 W with SCP technology at USB-A output. Goodman devices can charge power bank batteries from 0% to 60% in about 35 minutes for most of the devices attached under their category. A complete set of built-in protection circuits helps prevent overcharging and overheating, improving safety and reliability.