We initiated our analysis of experimental datasets with a lithium metal battery utilizing a LiFePO 4 (LFP) cathode, a 1M LiPF 6 electrolyte in ester-based solvents, and a lithium-metal anode . EIS measurements were performed after 30, 60, 90, and 120 charge-discharge cycles at a 5C rate. The Nyquist plots of the measured impedance spectra are displayed in Figure . Building upon the findings in Section 3.1.3, we applied multidimensional entropybased DRT deconvolution with all three regularization parameters (λ = λ τ = λ Ψ = 10 -3 ), effectively capturing the influence of cycling on the DRT. Contour plots of the recovered DRTs, presented in Figure (c), revealed two primary relaxation timescales: one timescale around 0.1 ms, which became more prominent with increasing cycle number, while another timescale at approximately 1.0 s remained relatively stable across cycling. The experimental impedance spectra were accurately fitted by the recovered DRTs, as shown in Figure . Subsequently, we applied the same analytical procedure to impedance data from a Panasonic ML621 battery, measured at various states of charge ranging from 10% to 100% (Figure