Currently, Meinert Lewerenz works at the Technical University, Ingolstadt, in the ELS (electromobility and learning systems) group of Prof Endisch. Meinert investigates tools to describe calendric and cyclic aging, including reversible effects and irreversible aging. The focus lies on non-destructive characterization methods that are validated by post-mortem analyses. The non-destructive methods utilized are differential voltage analysis (DVA), floating currents, and capacity difference analysis. This further includes the anode overhang effect, homogeneity of lithium distribution (HLD), deactivation theory, and the relaxation method. Currently, Meinert is focused on the influence of external pressure on cyclic aging.