In the BattNutzung cluster, ISEA is involved in the cluster-accompanying project greenBattNutzung and in the projects NUBase, OSLiB, BALd, MADAM4Life, BetterBat, SimBAS and Model2Life. The aim of ISEA’s work in these projects is to investigate fundamental factors influencing battery ageing and safety, to create models to describe and diagnostics to monitor these processes, and to specifically match cell design and planned battery application. Whilst investigating these questions, ISEA can make use of extensive preliminary work in the area of investigating battery ageing mechanisms from projects such as eperformance, MEET-HiEnD I – III, openBat and Raffzyklen. In addition, there is in-depth experience in the field of battery system modelling from projects such as Everlasting, DUETT and HV Modal. In addition, ISEA conducts intensive research on topics related to the overall system evaluation of battery systems in projects such as BOB-LKW, Eliptic, ZeEUS and E2Fuels. Through the position of Prof. Dr. rer. nat. Dirk Uwe Sauer as cluster coordinator for the Batterienutzungskonzepte cluster, ISEA is also committed to cross-cluster networking.