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Batteries are devices that store electrical energy in chemical form. They are produced in various types for a wide range of applications, from powering satellites to providing energy for pacemakers implanted in people. All batteries contain one or more cells, which consists of three main components: a positive electrode (terminal), a negative electrode, and an electrolyte (which can be either liquid or solid) separating them. When a battery is connected to an electric circuit, a chemical reaction occurs within the electrolyte. This reaction causes ions (positively charged atoms) to move in one direction within the cell, while electrons (negatively charged particles) flow through the external circuit in the opposite direction. This movement of ions and electrons generates electric current, which flows through the cell and the connected circuit, powering the devices the battery is attached to.
