for the measurements in this work, indicating that the measurements should be performed for a large temperature range and at multiple Larmor frequencies for accurate determination of the correct spectral densities and activation energies. The development of a better method to estimate errors in these highly correlated systems in subject of future research. For Li3-xIn1-xZrxCl6, x=0.3 the individual fits results in activation energies of 256 and 257 meV and β values of 0.365 and 0.427 respectively, whereas the combined fit yield an activation energy of 0.30±0.02 eV and β of 0.29±0.04. Despite the higher ionic conductivity measured from AC-impedance spectroscopy, the activation energy found at present is much higher (0.3eV for x=0.3) than the values found for the activation energies of unsubstituted Li3InCl6 (Ea = 0.131 for the fast process, 0.189 eV for the slow process).