C-Tech United Corp., together with its subsidiaries, designs and manufactures lithium battery modules in Taiwan, China, South Korea, and internationally. The company offers e-bike battery modules, cylindrical battery module, ranger extender battery module, and AGV battery module; e-motorcycle battery module and side car battery module; and ATV battery module, heavy e-motorcycle battery module, ATV electric 4-wheeled vehicle battery pack, and electric 3-wheeled vehicle battery pack. It also provides battery power system battery, including UPS and BBU battery modules; and ESS. In addition, the company offers design, develop, build, deliver, and manage services. C-Tech United Corp. was founded in 1985 and is based in New Taipei City, Taiwan.