This is the world’s first ever demonstration of a 10 minute 10-80% extreme fast charge using silicon-dominant cells in a driveable vehicle – rather than individual cells in a laboratory environment.
This XFC test by Polestar and StoreDot battery engineers was designed to demonstrate proof-of-concept for XFC battery technology that could be applied to future Polestar vehicles.
Thomas Ingenlath, Polestar CEO, said:
“With this new technology, on longer journeys when drivers do stop they’ll be able to spend less time charging and be back on the road faster than before. In fact, that stop time will be more akin to what they experience with a petrol car today.”
StoreDot’s XFC technology uses silicon-dominant cells with an energy density on par with state-of-the-art NMC cells, and does not require specialist cooling systems in the vehicle.
In today’s commercial EV batteries, fast charging rates can vary greatly depending on the battery’s state of charge (SOC), sometimes dropping significantly as SOC increases. During this test, Polestar saw charging speed rise from 310 kW at 10% SOC to over 370 kW at 80% SOC, proving the technology’s steady charging rate with no significant change in charging speed or efficiency whenever a driver decides to stop within this wide state-of-charge range.
The test also proves XFC technology works with today’s DC charging infrastructure, which continues to feature more high-power DC chargers of 350 kW or higher.
This means drivers will be able to spend less time stopped to charge their vehicle, which for a 10-80% charge on many modern EVs could still take around 30 minutes.
Want to keep seeing which stories are sparking the mobility community? Sign up to our MOVEMNT newsletter for weekly updates every Thursday 8am
