- ProLogium and Rimac Technology collaborate to launch battery pack model concept, advancing EV industry.
- ProLogium to develop pouch cell technology, focusing on cell-to-pack architecture.
- Both companies plan to showcase prototype of battery design concept at 2026 Paris Motor Show.
- Ultimate goal is to establish lighter, simpler, and higher-performance battery system.
Taiwanese energy innovator ProLogium and Croatia's Rimac Technology announced a battery pack model concept in Paris, with the two companies jointly advancing the battery electric vehicle (BEV) industry. The announcement comes less than a year after the two companies signed a memorandum of understanding in September 2025 aimed at developing a next-generation battery platform. According to a company statement, the design concept prototype will undergo laboratory, vehicle, and road testing, with plans to showcase it at the 2026 Paris Motor Show.
Development of pouch cell technology
Heat-resistant pouch cells. According to the statement, ProLogium is developing pouch-based battery cell technology, focusing on cell-to-pack (CTP) architecture. Pouch cells resemble large aluminum food pouches — flat packages made of flexible material that can contain multiple battery cells instead of food. The CTP architecture eliminates the need for individual casings, saving space and reducing weight, but is also prone to thermal expansion. The Taiwanese company expects to develop a fully functional battery module early next year and showcase it at the Consumer Electronics Show (CES) in Las Vegas in January 2027, while a fully functional battery pack is slated for delivery in the second half of next year.
To achieve final battery integration into vehicles, the company has set multiple milestones, including development and testing phases. ProLogium founder and CEO Vincent Yang said: "Bringing next-generation batteries to the automotive market requires more than just cell technology." He added that functional modules are currently under development, and once the overall concept model is complete, the company will further explore the next phase of development and production.
Challenges of high-performance battery systems
High-performance lightweight batteries. Through this collaboration, the two companies aim to achieve lighter, more compact battery systems by combining multiple high-energy-density lithium battery cells. However, they also warn that such systems do not automatically translate into lighter or more compact vehicle battery systems. Thorough testing of multiple factors — including packaging design, cooling mechanisms, mechanical integration, and safety — will determine which advantages truly benefit the vehicle without compromising output and performance.
Rimac Technology, responsible for technical integration, is simultaneously exploring multiple approaches, including testing of thermal management, mechanical cell integration, and system design for EV batteries. Rimac Technology Chief Product Architect Daniel Kišić said: "This work starts from vehicle-level requirements, aiming to improve every aspect of battery design through simplified design, functional integration, and weight reduction." He emphasized that design must account for cost while still achieving class-leading charging times and power output.
The ultimate goal is to create a lighter, simpler, more compact battery with higher charging capacity and performance — not just in the lab, but in cars on the road. Kišić added: "Once validated at the vehicle level, this solution is expected to significantly reduce weight, improve driving efficiency, and extend range." The company has set a target to conduct vehicle road battery testing in the second half of 2028. If tests succeed, the company will consider exploring hybrid solutions combining smaller, lighter battery packs with the same range, or same weight but higher energy and greater range.
Kišić said: "OEMs can choose to add more energy at the same weight, or provide a smaller, lighter battery for the same range, or any combination of the two."
ProLogium and Rimac's battery innovation partnership
The partnership between ProLogium and Rimac Technology marks a significant advance in EV battery technology. Through innovative pouch cell design, the two companies hope to achieve breakthroughs in reducing battery weight and increasing energy density. This involves not only technical challenges but also consideration of overall system integration and performance. As market demand for EVs grows, developing more efficient battery systems is crucial for driving industry development. Successful tests could change future EV design and performance standards.