Rice grain-sized solid-state battery could power next-gen smart lenses, wearables
SMRTR summary
A rice grain-sized solid-state battery, developed by UAE firm XPANCEO and French company ITEN, could power smart contact lenses capable of displaying augmented reality and monitoring health in real time. Unlike traditional lithium-ion batteries, it uses ceramic electrodes that cannot leak, swell, or catch fire. ITEN began mass-producing these microbatteries in May 2025, with customization underway for smart lens applications.
SMRTR provides this summary for quick context. The original article belongs to Interesting Engineering.
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