Electrolyte fill quantity and limiting capacity in sealed nickelcadmium cells

An electrolyte management model has been developed to facilitate the evaluation of electrolyte volume and concentration during nickelcadmium cell operation. The model calculates the optimum electrolyte quantity for filling sealed cells taking into account the maximum volume of a charged cell to prevent oxygen pressure buildup and the influence of charging during formation on electrolyte concentration. Upper and lower limits of electrolyte quantities, and their corresponding effects on cell performance, are also taken into account when deriving the model.