We also analyzed EIS data from a commercial LiMnO2 rechargeable battery (Panasonic ML621) at the states of charge (SOC) of 10%, 20%, ,, and 100%. The battery was charged at a constant current of 0.1 mA until a voltage of 3.1 V was reached. After a two-minute rest, a constant voltage charge at 3.1 V was carried out until the current decayed to 0.001 mA. To discharge the battery in steps of 10% SOC, a constant discharge current of 0. suggests that can be used to model the DCT of these EIS spectra. We used the procedure described in Sections 5.2.1 and 5.