ProLogium Technology has started mass production of its Gen 3.5 Lithium Ceramic Battery (LCB) at its Giga-level facility in Taiwan. A third-party TÜV test found that its large-format cell reached 381 Wh/kg of energy density and 903 Wh/L, putting the battery technology closer to large-scale commercial use.
The company says the battery is designed for applications that need high energy storage, fast charging, and strong power output. Its production platform has been developed through more than a decade of commercial battery manufacturing.
ProLogium’s Gen 3.5 LCB is now being produced at a Giga-level manufacturing facility rather than only in laboratory or pilot-line settings. The 185.4 Ah cell tested by TÜV achieved 381 Wh/kg gravimetric energy density and 903 Wh/L volumetric energy density.
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Higher energy density means more energy can be stored in a battery of the same weight or size. This can be useful for electric vehicles, drones, aerospace systems, and other applications where weight and space are important.
ProLogium Technology developed the Lithium Ceramic Battery platform and its Logithium™ cell architecture. The company began developing the architecture in 2012 and started commercial production in 2013.
Since then, ProLogium says it has shipped more than 2.4 million cells across consumer, specialty, and automotive applications. Its manufacturing technology has also progressed from sheet-by-sheet production to roll-to-roll and then Giga-level manufacturing.
Many battery applications need to store more energy without making the battery significantly larger or heavier. Electric vehicles and unmanned systems also need batteries that can deliver high power and recharge quickly.
Solid-state battery technology is being developed as one possible way to improve energy density and safety. However, moving from laboratory prototypes to reliable mass production remains a major challenge for the industry.
ProLogium’s Logithium™ architecture uses a ceramic separator and a special edge-frame structure around the electrodes. The design helps provide insulation and sealing while protecting against potential issues caused by electrode burrs.
The company has also developed its electrolyte technology over several battery generations. In Gen 3.5, the system uses a composite solid electrolyte, while the planned Gen 4 battery is designed to use a fully inorganic electrolyte system.
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A TÜV test measured the Gen 3.5 cell at 381 Wh/kg and 903 Wh/L. Separately, UL Solutions tested the cell using China’s GB/T 43568-2026 methodology.
During the test, the cell lost less than 0.05% of its weight after six hours under vacuum at 120°C. The reported result was below the 0.5% limit used by the standard for all-solid-state classification.
ProLogium says its manufacturing strategy has developed gradually rather than moving directly from a pilot line to Giga-level production. Its first commercial production line started in 2013, followed by a roll-to-roll manufacturing system in 2017.
In 2024, the company brought its third-generation Giga-level platform into operation. This facility is intended to support large-format cell production and provide additional manufacturing data for improving yield, consistency, and equipment performance.
ProLogium obtained IATF 16949 automotive quality-management certification in 2022. The company says its cells are already being supplied for automotive audio applications and used in vehicles from a major Japanese automaker.
According to ProLogium, one customer has placed more than 175 repeat orders, with cumulative deliveries exceeding 900,000 cells. The company has also entered the unmanned systems market, where high energy density and fast charging can help improve payload capacity and operating time.
ProLogium’s upcoming Gen 4 LCB is planned to use a fully inorganic electrolyte while keeping the same basic Logithium™ architecture and manufacturing platform. The company expects about 10% of its existing Giga-level production line and related equipment to require modification for Gen 4 production.
Gen 4 is also designed to include ProLogium’s Active Safety Mechanism, or ASM. The company says this technology is intended to help stabilize electrode materials at high temperatures and reduce the risk of thermal runaway.
Despite the move into mass production, solid-state batteries are still developing as a commercial technology. Large-scale manufacturing, cost, supply chains, and long-term performance remain important challenges as companies expand production.
ProLogium’s reported energy-density results also come from specific tested cells. Wider commercial deployment will provide more information about how the technology performs across different applications and production volumes.
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The move to Giga-level production is important because battery technology must prove that it can be manufactured consistently, not just perform well in laboratory tests. ProLogium’s approach aims to use the same manufacturing foundation across multiple battery generations.
The company plans to expand its manufacturing network from Taiwan to France and eventually North America. It is targeting applications including electric vehicles, AI data centers, aerospace, maritime systems, and unmanned vehicles.
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