We also supplemented our observations with interviews with battery researchers from various research laboratories and battery companies (PhD students, postdoctoral, engineers and professors, for a total of 10 hours of interviews). The interviewees were volunteers, and the interviews took place by Zoom or face-to-face in a meeting room in our laboratory. Several topics were addressed, including training needs, descriptions of activity in their organizations with different production scales, and their opinion about possible applications of MR in their activity.