As this position is a combination of a technical expert in the field of batteries and chargers and a PM, the 3 tech. interviews had a part of technical in-depth questions as well as a part of time-project-resources-problem management questions.
I would say that the technical questions covered pretty much everything on the initial job description of LinkedIn, with the explanation of the BMS circuit and the cell monitoring, the packaging of the cells, the mechanical design of housings, the materials, the charger electrical circuits etc.
The PM questions consisted of time-estimations of processes or tasks, explanation of design flows, sketching of Gantt diagrams of battery pack production as well as a lot of decision-making and change-management work. Also here a wide variety of questions about classical PM as well as systems and requirements engineering in the field of ESS and chargers were covered.