Filled epoxy potting materials are seen as promising polymer for applications in future automotive battery systems. Hence the electrolyte resistance is of crucial importance. This work examines the electrolyte resistance of potential material candidates for such applications. The material is stored hermetically in electrolyte for several weeks at an elevated temperature of 45 °C. Swelling values are determined and the mechanical behavior of the specimens is analyzed. Additionally, the electrolyte contamination is measured using head space injected gas chromatography and mass spectroscopy. Based on procedure of exclusion, the impact of filler- and matrix-system upon the swelling behavior is derived. The aim of this work is to identify possible amine-based epoxy materials, that are suitable for polymer metal joint applications, while being in contact with battery electrolytes.