A solid-state battery that can be charged in one minute.

ETH and Empa spin-off BTRY has developed an ultra-thin, all-solid-state battery that combines the energy density of lithium-ion with the power of supercapacitors, ideal for sub-1Ah devices. Built on scalable, solvent-free semiconductor vacuum manufacturing processes, its anode-free thin-film design simplifies production while boosting performance. Less than 0.1 mm thick, flexible, and temperature-resistant (-40 to +150 °C), it enables charge/discharge cycles in one minute. Fully customizable in shape and specifications, BTRY unlocks new possibilities in IoT, MedTech, and consumer electronics.