Which Battery Technologies Are Powering the World’s Fastest Racing EVs?

The same battery technologies that allowed Formula E drivers to complete races they mathematically shouldn’t have been able to finish are now solving the biggest obstacle to electric vehicle adoption: charging time. As range anxiety fades, charge anxiety is taking its place. The answer is being tested at 200 miles per hour on racetracks around the world, and it will arrive at charging stations near you within a few years

When Jake Dennis crossed the finish line first at the São Paulo ePrix on December 6, 2025, his Andretti Formula E car had consumed nearly 90 kilowatt-hours of electricity. But here is the twist: he started the race with only 52 kilowatt-hours in his battery.

The dramatic season opener for the 2025-26 Formula E championship showcased not just wheel-to-wheel racing around the 2.93-kilometer (1.8-mile) São Paulo Street Circuit, but also the cutting-edge battery technology that is quietly revolutionizing electric vehicles. Dennis beat Nissan’s Oliver Rowland and Porsche’s Pascal Wehrlein in a race that highlighted how Formula E has become a testing ground for technologies that will eventually power everyday electric cars.

The electric race cars reached top speeds of 200 miles per hour (322 kilometers per hour) and accelerated from 0 to 60 miles per hour in just 1.82 seconds, 30 percent faster than current Formula One cars. This performance is made possible by battery packs that pack more power, charge faster, and weigh less than anything available in consumer vehicles.

The High-Performance Battery Pack

At their core, Formula E batteries use the same fundamental chemistry as the battery in your smartphone or electric car. “The battery in your TV remote has the same fundamental chemical reaction as the battery cells that are used in all road vehicles and motorsport batteries,” says Douglas Campling, general manager of motorsport at Fortescue Zero in Kidlington, UK.

But the similarities end there. Formula E batteries are engineered to handle extreme demands that would destroy a conventional electric vehicle battery in minutes.

The batteries use lithium-ion chemistry with a specific variant that includes nickel, manganese and cobalt, known as NMC. “It allows for the higher-power applications,” says Campling. Each battery pack contains hundreds of individual cells, each about the size of an A5 notebook, stacked into modules with cooling plates between them to prevent overheating.

The key metric is power delivery. “The Formula E pack can deliver and receive any energy at a power of 600 kilowatts,” says Campling. That is a little over 800 horsepower. “Whereas the battery in your Toyota Prius will do less than half of that.”

There is also a measurement called the C-rate, which indicates how quickly the entire battery can be discharged relative to its capacity. “The C-rate of the cells that we use in the Formula E battery today is extremely high,” says Campling, allowing them to be charged and discharged at speeds that would be dangerous in consumer applications.

The battery assembly does double duty as a structural component of the car. “The chassis itself wouldn’t pass the squeeze test and the torsional stiffness test that it needs for its own performance,” says Campling. Using the battery to provide rigidity saves weight, a critical factor in racing.

Solving the Energy Problem

In the early days of Formula E, battery technology was so limited that drivers had to switch cars mid-race. “If you look at those first few seasons, because the battery range wasn’t where it is today, our drivers, very memorably, had to switch cars in the middle of the race,” says Beth Paretta, vice president of sporting at Formula E.

Eleven years later, drivers complete entire races in a single car. But they still face an energy deficit. “When they start the race, they only have 65% of the power to finish the race,” says Paretta. “If they just put their foot to the floor, they wouldn’t finish the race.”

Formula E solves this through two innovations that are already making their way into consumer vehicles.

The first is regenerative braking. “The motor on the front axle and the motor on the rear axle go into generator mode,” says Campling, which means the wheels turn the motor rather than the other way around, converting kinetic energy back into electricity. This technology is so effective that the rear axle does not have standard friction brakes at all, eliminating a source of particulate air pollution.

The second innovation, introduced in Season 11, is ultra-fast charging during the race. A technology called Pit Boost, developed by Fortescue Zero, delivers 3.85 kilowatt-hours in just 30 seconds at 600 kilowatts, about four times what the fastest commercially available chargers can manage.

“What they can do is say, ‘Our cars will charge faster than our competitors’,” says Campling, explaining how this technology will differentiate consumer electric vehicles as range anxiety gives way to charging anxiety.

From Track to Driveway

Many Formula E innovations are already moving into production vehicles. Fortescue Zero developed a battery management system called Elysia, which uses sensors and automated software to detect faults and optimize performance. It is being integrated into all Jaguar Land Rover vehicles, enabling faster charging and better battery longevity.

The fastest electric vehicles in the world now exceed Formula E speeds. In September 2024, the Yangwang U9 Xtreme, produced by Chinese manufacturer BYD, became the fastest production car of any kind, reaching 496.22 kilometers per hour (308.34 miles per hour). Experimental vehicles push even further, like the Venturi Buckeye Bullet 3 built by Ohio State University, which achieved a two-way average top speed of 341.4 miles per hour (549.4 kilometers per hour).

These achievements rely on the same battery technologies being refined in Formula E: high C-rate cells, advanced thermal management, structural battery integration, and sophisticated power delivery systems.

“The racetrack is a laboratory, and always has been,” says Paretta. Rear-view mirrors and anti-lock brakes were developed for racing before becoming standard in consumer cars. The same trajectory awaits Formula E’s battery innovations.

When Dennis powered his Andretti car to victory in São Paulo, the technology under his seat represented the future of electric mobility. Those ultra-fast charging systems, high-power battery packs, and regenerative braking technologies will be in driveways within a few years, making electric vehicles faster, more practical, and more sustainable.

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