We also analyzed the convergence of transference number (calculated with the cNE method), the linearity of lithium mean squared displacement with time, the ion diffusiv-ities, and lithium transference number as a function of simulation length. We compare these values computed using the entire simulation (300 ns) to values computed using a subset of the simulation (5, 10, 25, 50, 100, 150, 200, and 250 ns) in Figures )). This analysis was performed with LPG charges, and the same analysis at the experimental temperature can be found in SI section 5. For transference number (Figure ), the majority of the polymers have converged close to their final values within 50-100 ns. At the same time, some polymers with low conductivity (dark blue lines) have some fluctuations in their transference numbers even after 200 ns. When looking at averages across all the different polymers (Figure (c)) clear trends are visible for simulations at T exp and T exp+50 across all of these metrics.