BTRY, a deep-tech spin-off from Empa and ETH Zurich, has raised $5.7 million in new funding to advance the industrialization of its ultra-thin solid-state battery technology. The round was led by Redstone VC with participation from Bloomhaus Ventures, Linear Capital, Kickfund, Kick Foundation, and CustomCells founders Leopold König and Torge Thönnessen. Existing investors HTGF and Zürcher Kantonalbank also renewed their support. The financing brings together a group of investors focused on the commercialization of deep tech and industrial-scale production.
The new capital will support BTRY’s transition from research and prototyping to roll-to-roll manufacturing. The company plans to establish its industrial production setup, refine large-scale manufacturing processes, and secure offtake agreements for integration into next-generation electronic devices. BTRY’s solid-state thin-film batteries are designed to support ultra-fast charging, operate safely at high temperatures, and maintain a thin profile suitable for compact and connected products.
The company is positioning its technology as an alternative to traditional lithium-ion cells, which can face limitations in durability, thermal safety, and size. BTRY is targeting applications where small form factor, reliability, and long service life are essential, including smart labels, high-temperature industrial sensors, medical technology devices, and light consumer electronics. The batteries operate safely at temperatures up to 150 degrees Celsius, providing the ability to charge within one minute and power wireless transmissions without the need for additional capacitors.
BTRY also emphasizes sustainability in its production approach through solvent-free manufacturing and low material waste. The company believes the European battery ecosystem has an opportunity to compete globally by focusing on advanced materials and precision manufacturing processes rather than high-volume commodity production.
Founded in 2023, BTRY has grown to a team of 14 employees bringing together expertise in battery research, industrial scale-up, and commercial deployment. The company’s mission is to electrify applications that battery performance limitations have historically constrained.
KEY QUOTES:
“The oversubscribed round confirms strong investor confidence from experienced deep-tech and industrial backers. Working closely with this international consortium will enable us to transform world-class research into a scalable product.”
Moritz Futscher, CEO and Co-Founder of BTRY
“Potential customers are ready with their next-generation solutions, like active badges in logistics. What they need is a small, powerful, and safe battery – exactly what BTRY offers. We believe the company has not only the potential but the proof to set a new standard for high-performance energy storage and are excited to support its journey toward industrial scale.”
Mohamed Foulser, Investment Director at Redstone VC
“BTRY is a perfect example of Swiss deep-tech at its best – science-driven, bold, and globally relevant. The founding team combines deep scientific expertise with entrepreneurial grit. Their combination of material innovation and industrial scalability makes them a frontrunner in Europe’s next generation of battery companies.”
Pascal Stürchler, CEO at Bloomhaus Ventures
“Asia has been leading the way in battery manufacturing for decades, but innovations like BTRY’s show that Europe can compete through advanced materials and precision processes. We see strong potential for collaboration between Asian manufacturing expertise and BTRY’s pioneering solid-state technology.”
Tianyi Zhou, Principal at Linear Capital
