Leonova M. V. RussiaSt.-Petersburg JSC NIAI Istochnik, 10, Petrograd party, Dahl St., Saint Petersburg, 197376 Author's articles Influence of lithium on the capacitor characteristics of tight nickel-cadmium accumulators Enlagement of a working temperature interval of prism-form tight nickel-cadmium accumulators Main trends in chemical power source design at NIAI Istochnik Corp