China’s Contemporary Amperex Technology (CATL), the world’s largest producer of electric vehicle batteries, has unveiled an upgraded battery that promises an even longer range than rival BYD’s cutting-edge technology.

CATL's new Shenxing battery cell can reportedly provide a range of up to 520km from just five minutes of charging time. The announcement comes just days after BYD, an automaker with its own battery and semiconductor production, unveiled a similar system that can offer a range of about 400km in roughly the same charging time.

Contemporary Amperex Technology Co. Ltd., the world’s biggest producer of batteries for electric vehicles, unveiled the latest versions of its cells, playing up the durability and range.