Meizu mobile unveiled a new fast-charging technology—called Super mCharge—at MWC 2017 that’s capable of fully charging a 3000 mAh battery in just 20 minutes. Rapid charging has grown from novelty to highly desirable feature in a short period of time, with it being particularly popular in China, Meizu’s home market.

Meizu Super mCharge

Super mCharge is rated at 55W (at 11V/5A), which is dramatically more power than Motorola’s 28.5W TurboPower or Qualcomm’s 18W Quick Charge 3.0 methods. According to Meizu, that’s enough to fully charge a 3000mAh Super mCharge-rated battery in just 20 minutes, which is certainly impressive if it actually holds up in the real world. And in a world where exploding smartphone batteries are a lingering concern, Meizu promises that Super mCharge batteries will only reach around 100.4 degrees Fahrenheit, which is lower than the 111.2 degrees Fahrenheit that it claims Quick Charge 3.0 batteries can reach.

Super mCharge includes voltage, current, and temperature monitoring for battery health and safety. Because the USB Type-C cable conducts more than 3A of current, it includes an E-mark IC (electronically marked safety chip) on one connector.