ProLogium and OPmobility to co-develop solid‑state EV battery modules

Key highlights
  • Under the MoU ProLogium will supply solid‑state cells to OPmobility for electrical performance testing while OPmobility will design, develop and manufacture battery modules using those cells.
  • ProLogium cites cell metrics of 900 Wh/L volumetric and 380 Wh/kg gravimetric energy density, 5%→80% fast charge in ~6.4 minutes, cycle life >1,200 cycles, and >95% discharge performance at −20°C.
  • The collaboration will align common test protocols and engineering workflows to accelerate system‑level integration evaluation and help produce OEM‑adoptable module solutions.
  • ProLogium’s Dunkirk site construction is expected to begin in 2026, with ramp‑up between Q4 2028–Q1 2029 and mass production and deliveries targeted from Q2 2029.

Partnership scope

ProLogium and OPmobility have signed a Memorandum of Understanding to discuss joint development and integration of ProLogium solid‑state cells into battery modules and packs for electric vehicles. The stated objective is a system‑level, OEM‑adoptable module solution that improves competitiveness in the EV industry.

Testing and development approach

In the first phase ProLogium will provide cells to OPmobility for electrical performance testing under testing protocols agreed in advance. OPmobility will be responsible for module design, development and manufacturing. The parties plan to align test protocols and engineering workflows to accelerate system integration, clarify vehicle integration critical paths, and improve OEM engagement efficiency.

Cell performance and validation goal

ProLogium disclosed performance metrics for its Superfluidized all‑inorganic solid‑state lithium ceramic cells—900 Wh/L volumetric, 380 Wh/kg gravimetric, 5% to 80% fast charge in about 6.4 minutes, cycle life above 1,200 cycles, and discharge performance exceeding 95% at −20°C. The MoU frames work to validate how these cell‑level advantages can be engineered and verified at module and pack level for EV platforms.

Source: ProLogium

chemXplore Weekly

The week’s project milestones and project news from the chemical industry, free every Wednesday.

Free. One email a week. Unsubscribe any time.

Related articles

24 September 2026
Mercedes‑Benz & ProLogium agree joint testing of Gen4 solid‑state battery cells

Priority access to a new Gen4 inorganic solid‑state cell; Mercedes will run electrical, thermal and safety trials to assess suitability for future EV platforms.

9 September 2026
ProLogium and Kyushu Electric Power deepen partnership with strategic investment

Existing partner shifts collaboration from industrial projects to capital participation, advancing plans for next‑generation battery module manufacturing in Japan for heavy‑duty electrification.

2 September 2026
ProLogium begins mass production of Gen 3.5 all‑solid‑state LCB — 381 Wh/kg, 903 Wh/L

185.4 Ah cell posts 381 Wh/kg and 903 Wh/L in TÜV test; UL vacuum test classifies it as all‑solid‑state. Gen 3.5 now in mass production at Taiwan gigafactory.

18 June 2026
ProLogium and Elysian sign MoU to evaluate next‑generation batteries for large electric aircraft

Parties will assess pack‑level energy density targets (320–420 Wh/kg) to support large battery‑electric aircraft with 750–1,000 km ranges and explore European supply‑chain localization.

27 May 2026
ProLogium to list on Nasdaq via merger with Translational Development Acquisition Corp.

SPAC deal values company at ~$3.8B; will scale Gen‑4 solid‑state battery production, backed by up to ~€1.4B French subsidy, and target data‑center, aerospace and robotics markets.