Batteries - Page 5

Batteries are devices that store electrical energy in a chemical form and convert it into electrical energy when needed. They consist of one or more electrochemical cells, which contain positive and negative electrodes and an electrolyte. The chemical reactions within the battery generate a flow of electric current, which can be used to power various devices, from small electronics to vehicles. Batteries come in various types, including alkaline, lithium-ion, nickel-metal hydride, and lead-acid, each designed for specific applications and uses. They are crucial in providing portable power and are increasingly important in renewable energy systems, where they store energy generated from sources like solar and wind.