ProLogium Begins Mass Production of High-Energy-Density All-Solid-State Battery, Reaching 381 Wh/kg and 903 Wh/L TÜV validates Gen 3.5 energy density; UL Solutions testing supports all-solid-state classification under GB/T 43568-2026. More […] The post ProLogium Begins Mass Production of High-Energy-Density All-Solid-State Battery, Reaching 381 Wh/kg and 903 Wh/L appeared first on Batteries News .