The effect of electrolyte humidity on charge-discharge behavior of electrodes from graphite, thin-film amorphous silicon and thin-film composites ``silicon–carbon'' is estimated. Rise of humidity from 50 to 400 ppm is shown to accelerating capacity fade of graphite electrode by order of the magnitude. Electrode with 0.2 μm amorphous silicon film keeps the cyclability in electrolytes with water content up to 3000 ppm however its capacity diminishes upon humidity increase.
