BTRY AG

BTRY AG is a Swiss deep-tech startup founded in 2023 that develops ultra-thin solid-state lithium-ion batteries, spun out of Empa and ETH Zurich . Its core product is a 0.1-millimeter-thick film battery that can charge in one minute, operate safely at temperatures up to 150°C, and powers next-generation devices like smart logistics tags, high-temperature industrial sensors, and lightweight consumer electronics without needing extra capacitors . The company has built a 14-person team combining battery expertise, industrial scaling experience, and commercial acumen, and is pursuing solvent-free, low-waste roll-to-roll manufacturing . In late 2025 it closed an oversubscribed seed round led by Redstone VC with participation from Linear Capital, Bloomhaus Ventures, and others to advance commercialization ; more recently, in mid-2026, it secured a €2.2 million non-dilutive grant from the European Innovation Council Accelerator to further accelerate产业化 and量产 . Linear Capital's investment director Zhou Tianyi framed BTRY as evidence that Europe can compete in advanced materials and precision manufacturing niches where Asia has traditionally dominated battery production .