What is electrolyte?
Electrolytes – substances, melts or solutions which carry out an electric current owing to dissociation on ions however substances do not carry out an electric current. Solutions of acids, salts and bases can be examples of electrolytes. Electrolytes - conductors of the second sort, substance which in solution (or melt) consist in whole or in part of ions and possessing therefore have ionic conductivity.
Autoelectrolyte  - 40-60% solution of sulfuric acid. Density = 1.2 - 1.6 kg \ l. Despite distinction in percentage of sulfuric acid being in retail differs on weaker summer and stronger winter. It is applied to filling of lead-acid batteries in cars.