Bloomhaus Ventures is Backing Swiss solid-state battery pioneer BTRY

The Empa and ETH Zürich spin-off is industrializing ultra-thin solid-state batteries that combine fast charging, high durability, and intrinsic safety in formats thinner than a credit card. These batteries enable a new generation of devices - from connected labels and wireless sensors to industrial monitors and wearables - where conventional batteries are too large or too fragile.

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The round was led by Redstone VC with additional international investors including Linear Capital, Kickfund, and Kick Foundation. Existing backers HTGF and Zürcher Kantonalbank renewed their commitment, underscoring confidence in BTRY’s technology and market readiness.

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“BTRY is Swiss deep-tech at its best – science-driven, bold, and globally relevant. Their combination of material innovation and industrial scalability makes them a frontrunner in Europe’s next generation of battery companies,” Pascal Stürchler, CEO, Bloomhaus Ventures

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Solid-state, ultra-thin - and ready to scale

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With the new funding, BTRY is establishing industrial roll-to-roll production to bring its batteries into high-volume manufacturing. The cells operate safely at extreme temperatures, recharge in under a minute, and start at just 0.1 mm thickness. Their solvent-free process minimizes waste and supports sustainable scaling.

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Backed by a world-class team and experienced deep-tech investors, BTRY is poised to set a new standard in high-performance micro-energy storage.

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Bloomhaus Ventures looks forward to supporting BTRY as it transitions from Swiss innovation to global impact.

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