Dr. Jens Groot iscurrently holding the position as Chief Engineer Battery Systems at Polestar in Sweden where he supports advanced engineering work as well as participates in Polestar's battery development. Before joining Polestar he worked with strategic battery R&D at Volvo Cars and as a technical specialist at Volvo Group. He received his PhD from Chalmers University of Technology, where the main focus of his research was on high-power Li-ion battery lifetime prediction and modelling.