Mercedes-Benz and ProLogium Sign Gen4 Battery Testing Deal
Energy Storage
Strategic Partnership
Definitive Agreement:
May 27, 2026
Industry:
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Mercedes-Benz and ProLogium Enter Joint Testing Agreement for Gen4 Solid-State Battery
TAIPEI, Taiwan - Mercedes-Benz AG and ProLogium Holding Inc. have signed a joint testing agreement, providing Mercedes-Benz with priority access to test ProLogium's latest Gen4 Superfluidized Inorganic Next-Generation Lithium Ceramic Battery cells. This agreement builds upon the nearly ten-year partnership between the two companies.
Under the terms of the agreement, the Gen4 battery technology will undergo rigorous electrical, thermal, and safety testing at dedicated Mercedes-Benz facilities and specialized external testing institutes to evaluate its suitability for future electric vehicle platforms.
Key Highlights
- Mercedes-Benz secures priority access to ProLogium's Gen4 solid-state battery cells.
- Testing will assess energy density, cell safety, high rate capability, and thermal performance.
- Partnership expands on nearly a decade of technical collaboration and strategic investment.
- ProLogium plans to list on the NASDAQ under the ticker symbol PRLG following its business combination with Translational Development Acquisition Corp. (Nasdaq: TDAC).
About Prologium Holding Inc.
Founded in 2006, ProLogium is an energy innovation company dedicated to the development and manufacturing of next-generation lithium ceramic batteries, holding over 1,100 global patents (granted and pending). In 2013, ProLogium introduced the world’s first next-generation battery architecture featuring a 100% ceramic separator, becoming the first company globally to successfully commercialize solid-state batteries. In 2025, ProLogium again led the industry by introducing the world’s first superfluidized all-inorganic solid-state lithium ceramic battery, integrating the advantages of solid-state and liquid type batteries and redefining next-generation battery technology with automation-ready, scalable mass production and cost competitiveness. In 2026, ProLogium once again received the Edison Awards Gold Award for its superfluidized all-inorganic solid-state lithium ceramic battery technology.
With more than 13 years of manufacturing know-how, ProLogium is also the only company globally that can publicly demonstrate a solid-state battery mass-production line—proving that solid-state batteries are not merely a laboratory technology, but a mature solution ready for scalable manufacturing. In 2024, ProLogium inaugurated its first GWh-class gigafactory in Taoyuan, Taiwan, and has shipped more than 800,000 cells to date. In May 2024, ProLogium established its first overseas R&D center in Paris-Saclay, France, providing customized technical support for the European market. The Company’s first overseas GWh-class facility in Dunkirk, France, completed its environmental assessment and building permit process by the end of 2024, with construction expected to begin in 2026. Ramp-up is expected to begin between Q4 2028 and Q1 2029, followed by formal mass production and deliveries in Q2 2029.
