A LiCoO 2 LIR2032 button cell battery with a nominal capacity of 45 mAh was investigated. A total of 21 EIS measurements per SOC point were conducted on a Biologic SP-200 potentiostat with minimal state-of-charge variation for subsequent DRT processing and noise characterization. All experiments were carried out at room temperature in an uncontrolled environment using the same battery. In a first measurement, the capacity was determined by discharging the fully charged cell at the expected nominal 1C rate of 45 mA until reaching the end of discharge voltage (EODV) of 3 V. The resulting sum of the drawn current defined the prevailing capacity of this particular cell to 24.6 mAh.