ProLogium begins mass production of high-energy-density all-solid-state batteries
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ProLogium Technology has taken a decisive step toward commercializing high‑energy‑density solid‑state batteries, announcing that its Gen 3.5 Lithium Ceramic Battery (LCB) has entered mass production at the company's Giga‑level facility in Taiwan. The milestone marks one of the first transitions of all‑solid‑state battery technology from laboratory and pilot‑line development into full industrial manufacturing.
Independent test results underscore the significance of the achievement. TÜV verified that ProLogium's 185.4 Ah large‑format cell delivers 381 Wh/kg gravimetric energy density and 903 Wh/L volumetric energy density, enabling lighter, more compact battery systems capable of supporting high‑power output and fast charging. UL Solutions separately evaluated the cell under China's new GB/T 43568‑2026 methodology, which defines criteria for all‑solid‑state classification. After six hours under vacuum at 120°C, the cell recorded less than 0.05% weight loss - far below the 0.5% threshold - qualifying it as an all‑solid‑state battery under the standard. The GB/T protocol has also been submitted to the IEC as a reference for international standardization.
The Gen 3.5 LCB is built on ProLogium's Logithium cell architecture, developed in 2012 and designed from the outset for scalable production. The architecture combines a ceramic separator with a proprietary edge‑frame structure that adds insulation and sealing around the electrode perimeter. This design has remained the foundation of ProLogium's platform as electrolyte chemistry and active materials have evolved across four generations of battery technology and three generations of manufacturing processes.
ProLogium began commercial production in 2013 with its first Sheet‑by‑Sheet line, supplying niche markets such as consumer electronics, wearables, medical devices and semiconductor equipment. The company transitioned to continuous Roll‑to‑Roll manufacturing in 2017, and in 2024 activated its third‑generation Giga‑level platform for large‑format cells. Rather than attempting a single leap from pilot scale to gigawatt‑hour production, ProLogium has expanded capacity progressively, accumulating more than a decade of process data, quality control experience and customer delivery performance. To date, it has shipped over 2.4 million LCB cells.
Automotive customers have validated this manufacturing track record. ProLogium earned IATF 16949 certification in 2022 and continues to pass annual audits. Its LCB cells are supplied to a major U.S. automotive audio‑system company and installed in vehicles from a top‑three Japanese automaker in North America. More than 175 repeat orders have resulted in over 900,000 delivered cells, with expansion planned into Asia‑Pacific. The company has also secured contracts in the Unmanned Systems sector for applications requiring high energy density, high discharge capability and fast charging.
A key advantage of the Logithium platform is its ability to accommodate new electrolyte systems without rebuilding the manufacturing base. ProLogium's Composite Solid Electrolyte has evolved by reducing organic content, and the upcoming Gen 4 LCB will introduce a fully inorganic superfluidized electrolyte while retaining the same cell architecture and production flow. Only about 10% of the existing Giga‑level line is expected to require modification. Gen 4 will add ProLogium's Active Safety Mechanism (ASM) to stabilize electrode materials at high temperatures, improve low‑temperature performance and reduce material and manufacturing costs. Target markets include AI data centers, electric vehicles, maritime systems and aerospace.
ProLogium is now preparing a global manufacturing network. Taiwan will remain the technology and validation hub, France will support scaled production, and North America is being evaluated for phased localization. The company is considering a model in which Inlays - the core single‑layer LCB unit - are produced in France and shipped to North America for cell assembly, module integration and pack manufacturing closer to end customers. As demand grows, ProLogium may establish full Inlay production in the United States. A similar strategy could be deployed in Asia‑Pacific, leveraging Taiwan's Giga‑level facility.
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