In other words, dry-electrode processing is an essential technology for future energy storage device applications that require high energy density, safety, processing efficiency, and fast charging. The update, disclosed in Tesla's Q4 and FY 2025 update letter. Dry-electrode technology is an innovative concept and technique that enables the manufacture of electrodes through a "powder-film" route without the use of solvents. Dry-electrode technology can simplify manufacturing processes, restructure electrode microstructures, and enhance material. Elon Musk has officially confirmed a major milestone for Tesla's 4680 battery technology: the successful industrialization of the full dry‑electrode process for both anode and cathode. Elon Musk praised the Tesla engineering, production, supply chain teams, and suppliers for overcoming the “incredibly difficult” challenge.