BMZ GmbH is a German developer and manufacturer of rechargeable lithium‑ion battery systems, headquartered in Karlstein am Main. Operating under the BMZ Group umbrella, the company designs and produces battery modules, packs, and battery management systems for a wide range of applications.
BMZ serves markets including e‑bikes and other light electric vehicles, power and garden tools, intralogistics, medical and industrial equipment, commercial and off‑highway vehicles, and stationary energy storage for residential, commercial, and grid use. Its capabilities span cell selection and qualification, R&D, electronics and software, prototyping, testing, certification, series production, and after‑sales service, with attention to safety and regulatory standards.
The company operates manufacturing and logistics sites in Germany and internationally, including facilities in Poland, China, and the United States, supporting OEM customers with regional supply and scalable production of lithium‑ion solutions.