Kolikova G. A. RussiaSt.-Petersburg JSC NIAI Istochnik, 10, Petrograd party, Dahl St., Saint Petersburg, 197376 Author's articles Determination of compensative volume of dip lead-acid cells Volume changes of active materials during discharge of lead-acid cell The optimization of the positive electrode grid of stationary lead acid battery Higher reliability of lead-acid battery in local power system The influence of the specific energy, service life, resource on relative cost of the chemical power sources Portable sealed lead accumulators and batteries Energy installation system of navigational equipment with computer control