Batteries

A battery is a device that stores chemical energy and converts it to electrical energy. It does this through chemical reactions that involve the flow of electronics from one material (known as an electrode) to another, through an external circuit. Electrons can only flow when both sides of a battery are connected via a wire or other type of conductor.

To balance the flow of electronics, charged ions also flow through an electrolyte solution that is in contact with both of the electrodes. Different types of material produce different chemical reactions, resulting in a difference of how much energy the battery can store, and what voltage it produces.

Different types of batteries can be used in various applications, depending on size and power requirements, but overall, batteries are an important element of today’s electronics designs. The most common types of batteries are alkaline, lithium-ion, lithium-polymer and nickel-metal hydride.

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