Comparison of the internal resistance after 50 1C/1D cycles from 100 % SOC at a discharge current equivalent to 2D plotted over the proposed radd descriptor. Though not perfect there is a clear distinction between those electrodes with a higher anode area. The anode area is inferred from BET surface measurements of the anodes' graphite at 4.1 m 2 /g. For both loadings there is a small but significant increase in internal resistance with an increasing radd. The iR drop is correlated with the electrode area and is measured here in Ohm. When corrected for total surface area, the trends reverse but the overall shape remains.