Polestar Hits Impressive Charging Speeds with Prototype Car and Novel Battery Tech

Electric vehicle naysayers have a whole host of arguments against moving away from internal combustion. Range anxiety is often one of the first to hit the table, but that’s quickly becoming a non-issue as most new EVs offer a serviceable driving range. Charging time is another argument, but it’s one that actually has some teeth. Even the fastest-charging models still take upwards of half an hour to recover a meaningful amount of driving range, but Polestar recently demonstrated that worries about charging times may become a thing of the past.

The automaker partnered with battery technology company StoreDot on charging systems for a Polestar 5 prototype and achieved a 10-80 percent charge in just ten minutes. Using Extreme Fast Charging (XFC) silicone-dominant cells in a drivable vehicle instead of in a contained lab environment, the pair were the first to reach the milestone. In the real world, the early test could lead to 100-kWh battery packs that can recover 200 miles of range in 10 minutes.

Polestar said that today’s EV battery charging speeds vary wildly depending on a variety of factors, including the beginning state of charge (SOC). It noted that charging speeds typically fall off as the SOC increases. Starting at ten percent, the car’s batteries charged at 310 kW and increased to 370 kW at 80 percent SOC, the opposite of what we see today. Most impressively, the XFC technology works on existing DC fast charging infrastructure and the growing number of 350-kW chargers.

[Image: Polestar]

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