ProLogium and Rimac Technology have revealed a compact battery pack concept designed to reduce weight and expand driving range for electric vehicles. The system relies on flat pouch cells arranged directly inside the pack without intermediate module casings. Functional prototypes will enter validation ahead of planned road trials in 2028.
The design relies on a cell to pack architecture. Instead of bundling cells into individual modules with separate enclosures, the cells sit directly inside the primary structure. This setup cuts overall mass and eliminates wasted interior volume. Because dense cell packing raises thermal challenges, both teams are focusing heavily on managing heat dissipation and structural expansion during fast charge cycles.
Development remains in the functional segment phase. ProLogium and Rimac plan to assemble a complete production prototype in the second half of 2027. Real world vehicle testing will follow in the second half of 2028. Engineers must validate cooling performance, impact resistance, and chassis integration before the technology reaches commercial vehicle platforms.
Success in testing gives automakers 2 distinct engineering options. Brands can install a lighter battery pack to drop vehicle weight while maintaining current driving ranges, or keep the original pack weight to deliver significantly higher energy capacity.
