  A common, yet unmodelled experimental phenomenon is explained first through
the experimental data and then through modelling efforts. The phenomenon is a
large, temporary loss in voltage during constant current discharge. This effect
can be observed in several independent experimental settings, such as during
low-temperature operation, under high currents, with low Electrolyte-to-Sulfur
(E/S) ratios, as well as in cells with high salt concentrations. The model
presented here is the first to prove to capture this effect. Moreover, several
other related experimental results are presented, discussed, and predicted by
the model. A fundamental explanation for why most Li-S models are unlikely to
be able to capture the large voltage loss effect is also given.
