Question

The combination of two or more cells which convert chemical energy in to electrical energy.
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Answer 1

Answer:

battery

A battery is a device that converts chemical energy contained within its active materials directly into electric energy by means of an electrochemical oxidation-reduction (redox) reaction. This type of reaction involves the transfer of electrons from one material to another via an electric circuit.

Answer 2

Explanation:

An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or using electrical energy to cause chemical reactions. The electrochemical cells which generate an electric current are called voltaic cells or galvanic cells and those that generate chemical reactions, via electrolysis for example, are called electrolytic cells.[1][2][better source needed] A common example of a galvanic cell is a standard 1.5 volt[3][better source needed] cell meant for consumer use. A battery consists of one or more cells, connected in parallel, series or series-and-parallel pattern.