StoreDot demos its XFC silicon battery cell in Polestar 5 prototype EV

In a latest demo video released by Israeli battery startup StoreDot, a fully driveable verification Polestar 5 prototype powered by StoreDot's extreme fast charging (XFC) silicon-dominant battery cells recharged from 10 percent to 80 percent SoC (State of Charge) in under 10 minutes. 

With a 77 kWh battery pack, the EV saw a consistent charge rate of over 310 kW for the entire test procedure and a peak of more than 370kW. All cell parameters including temperature, voltage and charged capacity were monitored throughout, with the battery pack never exceeding the target operating temperature set by engineers of both teams, the company claims. 

The demonstration also showcases StoreDot's 'drop-in' ability to be integrated in an existing car model. It also paves the way to extreme fast charging a car using available charging infrastructure, rather than using proprietary chargers, the company notes. 

"We are very excited to share this impressive achievement today and are proud to be on this journey with Polestar, a leading car brand who envisions high performance cars with a sustainable future", said Dr. Doron Myersdorf, CEO of StoreDot. 

"We're happy to see our partner is among the first EV car makers to acknowledge that XFC is now a necessary standard to make vast EV adoption a reality. With our extreme fast charging technology, you can add 200 miles in under 10 minutes". 

"This breakthrough revolutionizes EV ownership experience by eradicating the barrier of range and charging anxiety once and for all. Drivers can now truly travel long distances with the same freedom and convenience as traditional petrol-powered vehicles", the CEO added. 

Silicon-based anode technology enables high energy density of 300 Wh/kg and pushes charging rate boundaries for several more battery generations. In contrast, conventional graphite anodes are already approaching their theoretical performance limits, restricting further advancements, according to StoreDot. 

The company's silicon design provides a crucial pathway to sustained innovation in areas like extreme fast charging. StoreDot is moving toward rapid commercialization, with the technology proving its maturity, stability, and durability at every level. 

Thomas Ingenlath, CEO of Polestar, commented, "By eliminating charging times that were previously an obstacle, StoreDot's XFC battery cells combined with our cutting-edge product development and battery engineering have unlocked new frontiers for electric mobility. This technology will reshape consumer expectations and accelerate mass EV adoption by making EV ownership a seamless experience for the mass market."

StoreDot remains firmly on track with production-readiness of its XFC cells that deliver 100 miles charged in 5 minutes this year. The company aims to deliver 100 miles charged in 4 minutes in 2026, and 100 miles charged in 3 minutes by 2028.