Rapidly recharging electric vehicle batteries, capable of full charge in mere 18 seconds, move towards large-scale production.
The VarEVolt battery, developed by British engineering company RML Group, is set to revolutionise the electric vehicle (EV) industry with its groundbreaking charging technology. This ultra-high-power-density battery can be fully recharged in just 18 seconds, a remarkable improvement over conventional EV batteries[1][2][3].
The VarEVolt battery boasts a power density of 6 kilowatts per kilogram, significantly higher than conventional EV batteries like the Porsche Taycan’s[1]. With a C rating of 200, it can charge or discharge completely in about 18 seconds - a dramatic improvement compared to batteries with a C rating of 4 to 5, which take 12 to 15 minutes to charge or discharge[1].
RML Group received government Conformity of Production certification for the VarEVolt battery on June 2, 2025, paving the way for mass production and large-scale manufacturing contracts[1]. The battery’s modular design allows manufacturers to tune it for different applications, prioritising range, power, or a balance of both according to the vehicle’s needs[1].
This rapid charging technology could transform EV user experiences, reducing what typically takes minutes to mere seconds. However, the extremely fast charging demands power sources akin to utility substations rather than standard chargers, meaning initial uses are likely to be in specialized sectors such as racing or high-end hypercars. As charging infrastructure advances, VarEVolt batteries could enable near-instantaneous charging for everyday EVs, drastically reducing downtime[2].
The VarEVolt battery has already been tested and successfully applied in the Czinger C21, a hybrid hypercar. RML Group, which has been a supplier of chassis and battery solutions for the NIO EP9, a car that holds the world record for the fastest electric lap at the Nürburgring, is no stranger to high-performance electric mobility[4]. In fact, the VarEVolt battery was tested under extreme conditions as part of RML Group's 40th anniversary celebrations[4].
The VarEVolt battery's focus on instantaneous energy delivery sets it apart from other companies working on solid-state cells or lithium improvements. Instead of competing to last longer, RML has bet on immediacy, which could be a paradigm shift in mobility, making cars faster in every way[5].
In summary, the VarEVolt battery promises to break down the barrier of long charging times, offering a competitive edge in key moments of use such as charging, starting, and responding. This revolutionary battery could accelerate the transition to high-performance electric mobility, particularly in Europe, and establish RML Group as a major player in the global electric vehicle market.
| Feature | VarEVolt Battery | Conventional EV Battery (e.g., Porsche Taycan) | |-----------------------|-----------------------------------------------------------|-----------------------------------------------------| | Full charge time | ~18 seconds | 12 to 15 minutes | | Power density | 6 kW/kg | Significantly lower | | C rating (charge/discharge speed) | 200 | Around 4 to 5 | | Mass production approval | June 2, 2025 | N/A | | Application flexibility | Modular design allows tuning for power or range | Fixed designs |
[1] https://www.rml.co.uk/news/press-releases/rml-receives-production-certification-for-varevolt-battery [2] https://www.rml.co.uk/news/press-releases/varevolt-battery-revolutionises-ev-charging-times [3] https://www.rml.co.uk/news/press-releases/varevolt-battery-breaks-down-barrier-of-long-charging-times [4] https://www.rml.co.uk/news/press-releases/varevolt-battery-tested-in-czinger-c21 [5] https://www.rml.co.uk/news/press-releases/varevolt-battery-betting-on-immediacy
- The VarEVolt battery's extraordinary capabilities in charging, with a power density of 6 kilowatts per kilogram and a C rating of 200, can make sports events more exciting as instantaneous charged electric vehicles can participate, outperforming conventional EVs like the Porsche Taycan.
- The advancements in science and technology, as demonstrated by the rapid charging VarEVolt battery, could revolutionize the field of science, particularly in space exploration, where technology requiring immediate power could benefit significantly from such a quick power source.
