CAP-XX Limited, together with its subsidiaries, develops, manufactures, and sells supercapacitors primarily in the Asia Pacific, Europe, and North America. It offers DMF, DMH, DMT, ultra-thin prismatic, and cylindrical cell supercapacitors. The company provides its products for the use in various applications, such as asset tracking, auto, locks, PDAs, scanners, smart meters, wearable devices, wireless sensors, battery support, energy harvesting, power backup, and peak power support applications. The company was formerly known as Energy Storage Systems Pty Limited and changed its name to CAP-XX Limited. CAP-XX Limited was incorporated in 1990 and is headquartered in Seven Hills, Australia.