In electricity, a battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. The dry cell is one of many general types of electrochemical cells.
Source: Boundless. “Dry Cell Battery.” Boundless Chemistry. Boundless, 17 Nov. 2014. Retrieved 29 Mar. 2015 from https://www.boundless.com/chemistry/textbooks/boundless-chemistry-textbook/electrochemistry-18/batteries-131/dry-cell-battery-522-4864/