In this study, it is proved that for batteries, the following empiric equations: generalized Peukertequations, porous electrode equation, and probability integral describe the changes in the batteries capacitance in the case of a complete range of change in discharge current with the same parameters,regardless of the capacitance of the batteries under study. Meanwhile, Peukert equation is true onlyfrom the point of inflexion of the experimental curve (i) infinitely.
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