Our systematic model-comparision results together with the similarities to the apparent surface charge-dielectric continuum solvation models 23 opens two valuable strategies for estimating ion jump-diffusion barriers with our approach. On the one hand, if there are no NEB barriers at hand for a given ion migrating in a certain class of systems (e.g., transition metal oxides) that would allow optimization of the ion model-especially, of the radius-, we can recommend to use the full-sphere model with the Wigner-Seitz radius of the intercalating ion. This is because the full-sphere model yields similarly small errors as the optimal (shell) model in our case. On the other hand, if there, in fact, are NEB barriers for a given class of system, we recommend to optimize the model, similar to the fitting that is usually done in the dielectric continuum solvation models, to increase accuracy.