RML Group has expanded its VarEVolt battery range with three new modules: a High Power HEV (36 21700 cells), an Ultra-High Power HEV (24 26700 cells) for motorsport, and a BEV module (21700 cells). Built on commercially available cells, the company are presenting the rangethe at Battery Show Europe in Stuttgart.
RML Group has added three new modules to its VarEVolt battery range, expanding the line-up to cover performance hybrid and battery-electric vehicle (BEV) applications spanning track-focused systems and road-going performance cars.
The UK-based high-performance automotive engineering specialist is presenting the expanded range at Battery Show Europe in Stuttgart, running June 9 to 11, 2026. The portfolio draws on battery development work from the company’s hypercar, motorsport, and high-performance vehicle programs.
The new modules cover three configurations. The High Power hybrid electric vehicle (HEV) module uses 36 21700 cells, combining high discharge and charge capability in what RML describes as a cost-effective solution for applications prioritizing peak power density over energy. The Ultra-High Power HEV module uses 24 26700 cells and is optimized for higher peak power density and fast charge/discharge cycling, which the company says suits motorsport and extreme-performance hybrid systems. The BEV module uses 21700 cells to provide increased energy density while maintaining power characteristics, balancing range and performance.
The modules combine thermal management, optimized cell packaging, and a scalable architecture. RML says its established links to several of the world’s cell suppliers allow it to fit different cells to each module to fine-tune power and energy, while the cell configuration can be altered to match an application’s exact voltage and energy requirements.
The range has been designed around commercially available cell technologies, which RML says enables manufacturers to draw on established supply chains while accessing battery systems built using the company’s thermal management, packaging, and performance optimization expertise.
“Over the past year, we have seen growing interest from niche vehicle manufacturers and OEMs in high-performance hybrid architectures,” says Denis Gorman, head of powertrain at RML Group. “For many applications, hybridisation offers an effective route to meeting performance, drivability and emissions objectives without the compromises associated with large battery-electric platforms.”
According to Gorman, the company’s experience developing battery systems for demanding EV and hybrid applications has allowed it to create a flexible range adaptable to different vehicle requirements. “By combining proven cell technologies with advanced pack design and thermal management, we can help manufacturers accelerate development programmes while maintaining confidence in performance and supply-chain resilience,” he says.
