CustomCells

CustomCells, a leading German manufacturer founded in 2012, specializes in premium lithium-ion battery technology for automotive, aviation, and maritime sectors. Offering solutions like ultra-fast silicon-dominant batteries and modular designs, they serve over 500 clients. Combining innovative research with efficient manufacturing, CustomCells delivers high-performance, customizable battery systems.

Company Location

Country:

Germany

City:

Itzehoe

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Company Overview

CustomCells, founded in 2012 as a spin-off from the Fraunhofer Institute for Silicon Technology (ISIT), is a premium lithium-ion battery technology manufacturer based in Itzehoe, Germany. With over 200 professionals and experience from more than 2,000 projects, it delivers high-performance battery solutions for automotive, aviation, and maritime applications. Founders Leopold König and Torge Thönnessen lead the company focused on customizing efficient, reliable energy storage systems.

Battery Technology

Develops and manufactures specialized lithium-ion batteries with optimizations for safety, temperature resistance, and performance. Core technologies include silicon-dominant cells via Enevate partnership, SCC55® silicon material from Group14 Technologies, pressure-neutral systems for underwater use, and modular cell architecture enabling customization and cost-effective production.

Products

Product portfolio includes silicon-dominant batteries with ultra-fast charging (up to ten times faster than conventional cells), pressure-neutral modules for submersible applications, and bespoke power solutions for medical devices.

Recent Projects

In 2024, secured a $300 million supply agreement with Group14 Technologies through 2030; filed nearly 40 new patents; partnered with KREISEL on high-performance battery research; announced plans to build a U.S. manufacturing facility.

Investors

Founders Leopold König and Torge Thönnessen serve as the primary shareholders. Key investors include Porsche (via Cellforce Group JV), Vsquared Ventures, 468 Capital, World Fund (which led a €60M Series A), Abacon Capital, and Ventresa.

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