A device which converts chemical energy into electrical energy is called __________?

A. motor
B. generator
C. moving-coil meter
D. battery

Batteries are devices that convert stored chemical energy into useful electrical energy. It consists of a number of voltaic cells connected in series by a conductive electrolyte containing anions and cations. A battery may be thought of as a clever variant of a standard exothermic chemical reactor that yields chemical products with lower energy content than the chemical reactants.