ProLogium Initiates Mass Production of Gen 3.5 Solid-State Batteries with 381 Wh/kg Energy Density for EVs

September 13, 2026

Electric Cars Report Taiwan

Overview

ProLogium Technology has commenced mass production of its Gen 3.5 lithium ceramic batteries (LCB) at its Taiwan gigafactory. These solid-state batteries achieve a groundbreaking energy density of 381 Wh/kg, promising significant advancements in electric vehicle range, charging speed, and overall battery efficiency. This mass production milestone marks a pivotal moment for the EV industry, accelerating the transition towards next-generation mobility solutions.

In Depth

Key Findings

ProLogium Technology has officially commenced mass production of its Gen 3.5 lithium ceramic batteries (LCB) at its gigafactory in Taiwan. This solid-state battery boasts an impressive gravimetric energy density of 381 Wh/kg, a performance metric expected to significantly enhance electric vehicle (EV) range, reduce charging times, and improve overall battery efficiency.

Technical and Clinical Details

ProLogium’s Gen 3.5 LCB utilizes a ceramic solid electrolyte instead of traditional liquid electrolytes, achieving both high energy density and superior safety. The 381 Wh/kg energy density surpasses that of most conventional lithium-ion batteries, enabling longer driving ranges for EVs. Furthermore, solid electrolytes inherently mitigate the risk of thermal runaway, thereby enhancing battery safety. The mass-produced batteries are slated for supply to electric vehicle manufacturers, potentially redefining performance benchmarks for next-generation EVs.

Background and Industry Context

Solid-state batteries have long been anticipated as a ‘game-changer’ for the EV industry, but scaling manufacturing has been a persistent challenge. ProLogium’s initiation of mass production signifies a major breakthrough in overcoming this hurdle, representing the culmination of their unique technological advancements and manufacturing processes. This development ushers in a new era of battery competition within the EV market, addressing the growing demand for higher-performance and safer battery solutions. Lithium ceramic batteries also offer potential advantages in terms of stable material sourcing and cost, which could positively impact the entire EV supply chain.

Strategic Significance and Outlook

The mass production of ProLogium’s Gen 3.5 LCB is a crucial step toward accelerating EV adoption and delivering more compelling products to consumers. Future developments are expected to include expanded partnerships with other EV manufacturers and continued R&D efforts to further increase energy density. This technology holds promise beyond electric vehicles, with potential applications in drones, industrial robots, and other sectors requiring high energy density and enhanced safety. The commercialization of solid-state batteries is an indispensable factor shaping the future of energy storage technology.

Source: https://electriccarsreport.com/2026/09/prologium-starts-solid-state-battery-mass-production-with-381-wh-kg-energy-density/

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