Dr. Alexander Fill is Group Leader for Battery Systems at the Institute of Photovoltaics, University of Stuttgart. His work focuses on lithium-ion battery system design, parallel cell connection, and performance evaluation. With experience spanning both academia and industry—including a PhD at Daimler on lithium-ion cells—he combines fundamental research with practical application to advance next-generation energy storage solutions.

The Institute for Photovoltaics (ipv) at the University of Stuttgart is a leading center for research in photovoltaics, optoelectronics, and energy storage. Part of the Faculty of Computer Science, Electrical Engineering and Information Technology, it combines fundamental research with practical solutions for the renewable energy transition. Under the leadership of Prof. Dr. Michael Saliba, ipv advances next-generation technologies in lithium batteries, perovskite solar cells, tandem and multi-junction devices, and semiconductor sensor systems. Alongside its strong research profile, the institute provides teaching, supervises doctoral work, and collaborates closely with industry to translate innovation into real-world applications.