Polestar has been working with the Israel-based battery specialists at StoreDot to improve the charging speed and energy density of its future EVs, and their latest development seems rather promising. The manufacturer recently announced that a Polestar 5 prototype was able to charge from 10 to 80% in only 10 minutes at a consistent charging power of 310 kilowatts with a peak of over 370 kW.
The battery pack used in this test only had a capacity of 77 kilowatt-hours, so it’s a bit smaller than the 100 kWh pack that will equip the production Polestar 5, which will have an 800-volt architecture. The pack was made up of silicon-dominant XFC cells with an energy density of 300 Wh/kg provided by StoreDot that are specially designed for ultra-fast charging.
