With a racing heritage that predates its formal inception in 1984, RML Group( RML) has always operated in the world of motorsport and high-performance engineering. Founded by Ray Mallock, the company built its reputation producing touring cars and made its comeback in touring car racing in 2026. Alongside building cars for CPRL, RML has completed a wide range of high-profile projects over the years, including the Nissan ZEOD RC, the NIO EP9 and various other high-performance applications. Vertically integrated, the company boasts an impressive degree of internal capability, including its own fabrication shop, machine shop, inspection facilities, battery welding and battery production. This capability set increasingly enables RML to move into new territory with confidence. That vertical integration has proved particularly valuable as RML has evolved its VarEVolt battery range. Originally launched as an ultra-high-performance product designed specifically for motorsport and supercar applications, the range has since been significantly extended.“ VarEVolt uses a cell with class-leading performance, but in a less common form factor,” begins Denis Gorman, Head of Powertrain.“ What we wanted to explore was how we could take the core technology and concepts behind it, such as the scalability, the adaptability and the immersion cooling for improved thermal performance and apply that to other applications. Those applications invariably have different needs in terms of power, energy and cost, so to reach them we needed to move to a more common cell form factor. Therefore, we developed the VarEVolt concept to suit 21700 cells and ultimately produced two versions: one optimized for BEV and high-energy