Polestar conducts extreme fast charge demonstration

Polestar and fast-charging battery pioneer StoreDot have successfully demonstrated the implementation of StoreDot's Extreme Fast Charging technology in a car for the first time.

The charging exercise is said to have charged a Polestar 5 prototype from 10% to 80% in just 10 minutes, with the prototype seeing a consistent charge rate starting at 310kW and rising to a peak in excess of 370kW at the end of charging.

The charging demonstration saw the Polestar 5 prototype offering a consistent charge rate which started at 310kW and rose to a peak in excess of 370kW at the end of the 10-minute charging session

The demonstration is said to be a world-first of a 10 minute 10% to 80% extreme fast charge using silicon-dominant cells in a driveable vehicle rather than individual cells in a laboratory environment, and marks Polestar’s commitment to developing the best driving experience for the future.

The electric vehicle manufacturer further states that while the demonstration was done via a specially commissioned 77 kWh battery pack, this battery pack has the potential to have its capacity increased to at least 100kWh, allowing up to 320km of range to be added to a mid-sized electric car in 10 minutes.

StoreDot's revolutionary Extreme Fast Charging technology utilises silicon-dominant cells, which are said to have an energy density on par with state-of-the-art nickel manganese cobalt cells and do not require specialist cooling systems in the vehicle. The experimental XFC battery’s modules are additionally said to sport high recyclability and serviceability.

The test of StoreDot’s XFC technology is additionally said to work with the currently available direct current charging infrastructure, which is starting to feature more points which offer a power rating of 350kW or higher.