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It consists of one or more electrochemical cells, also known as galvanic cells, which have two electrodes - a positive electrode (cathode) and a negative electrode (anode) - with an electrolyte in between them. The key function of an electric battery is to store and supply electrical energy. When connected to an external circuit, such as in a flashlight or a car, the battery's chemical reaction produces a flow of electrons between the electrodes, creating an electric current that can power devices. There are various types of electric batteries, each with its own specific chemistry and characteristics. Common examples include lead-acid batteries (used in cars), lithium-ion batteries (commonly found in portable electronic devices), and nickel-cadmium batteries (often used in household appliances). In recent years, electric batteries have gained significant attention due to their crucial role in the development and deployment of electric vehicles and renewable energy systems. The ability to store electricity efficiently has become a critical factor in reducing dependence on fossil fuels and transitioning towards more sustainable energy sources. The Wikipedia page on electric batteries provides detailed information about the history, construction, types, and applications of these devices. It also includes sections on battery charging and discharging, battery management systems, and environmental concerns associated with battery manufacturing and disposal. Overall, the page offers a comprehensive overview of electric batteries, serving as a valuable resource for those interested in understanding the fundamental science behind energy storage technologies.