Switzerland-based BTRY has closed a $5.7 million oversubscribed seed round to accelerate industrial production of its ultra-thin solid-state batteries. The round will support the transition from lab-scale fabrication to roll-to-roll manufacturing, as the company prepares integration with next-generation connected devices.
- BTRY develops thin-film solid-state batteries designed for applications where miniaturization, fast charging, and durability are critical — including connected labels, industrial sensors, wearables, and light consumer electronics.
- According to the startup, the cells can fully charge in under one minute, safely operate at temperatures up to 150°C, and directly power wireless transmissions without extra components. The nonflammable design also enhances safety compared to conventional lithium-ion batteries.
- Using semiconductor-style production methods, BTRY’s approach increases material efficiency and eliminates the use of solvents, reducing manufacturing waste and the environmental footprint.
- 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 (High-Tech Gründerfonds) and Zürcher Kantonalbank (ZKB) also followed on.
- The company is now targeting global markets as demand grows for compact, safe power sources in IoT and sensor-driven devices. The new funding will go toward setting up production lines, refining industrial processes, and securing integration agreements with hardware partners.
