Fraunhofer LBF has hosted SELFIE consortium at their premises in Darmstadt on 4th and 5th June 2019. Main aim of this 1,5-day meeting was to meet for the second General Assembly but also to hold a joint workshop for work packages 2 and 3. Now, that the SELFIE project has been running for almost full 6 months, the final version of project management structure has been officially presented and further confirmed by all partners. Furthermore, this gathering has been efficiently used to further refine the architecture of the thermal management system and to discuss system requirements on component level. There was also some time for culture, when Felix Weidmann took the partners around beautiful city of Darmstadt and enthusiastically shared his extended knowledge on history and architecture of the city.