CustomCells, founded in 2012 as a spin-off from the Fraunhofer Institute for Silicon Technology (ISIT), has established itself as a leading manufacturer of premium lithium-ion battery technology. Based in Germany, the company specializes in developing and industrializing advanced battery solutions for automotive, aviation, and maritime applications. With over 200 professionals and experience from more than 2,000 projects, CustomCells serves more than 500 clients across various industries. The company’s approach combines innovative research with efficient manufacturing processes to create high-performance battery solutions that meet specific customer requirements.
Battery Technology
CustomCells develops and manufactures specialized lithium-ion batteries with various optimizations for safety, temperature resistance, and performance metrics. Their product portfolio includes silicon-dominant battery technology, created through a partnership with Enevate, which delivers ultra-fast charging capabilities – up to ten times faster than conventional lithium-ion batteries. The company’s technical expertise extends to pressure-neutral battery systems for underwater applications and specialized power solutions for medical devices.
A significant technological advancement comes from their multi-year agreement with Group14 Technologies, incorporating SCC55® silicon battery material into their production. This integration enhances energy density and charging capabilities while maintaining high safety standards. CustomCells’ manufacturing processes focus on modular cell technology, allowing for flexible customization while maintaining reliability and cost-effectiveness.
Recent Projects
In 2024, CustomCells secured a substantial supply agreement with Group14 Technologies, valued at over $300 million, ensuring access to advanced silicon battery materials through 2030. The company has expanded its intellectual property portfolio with nearly 40 new patent applications within the past year. A notable development includes their collaboration with KREISEL for research on high-performance batteries. CustomCells has also announced plans to establish a manufacturing facility in the United States, marking their expansion into North American markets.
Investors
CustomCells’ financial backing includes several prominent investors. The company’s founders, Leopold König and Torge Thönnessen, remain the largest shareholders. Porsche maintains significant investment through the Cellforce Group joint venture. Additional investors include Vsquared Ventures, 468 Capital, and World Fund, which led a €60 million Series A financing round. Abacon Capital and Ventresa have also contributed to the company’s growth through strategic investments.
Business Details
Location: Itzehoe, Germany
Website: https://customcells.com
LinkedIn: https://www.linkedin.com/company/5093094
