An electrolyte is a substance that produces ions when dissolved in water, allowing it to conduct electricity. Common examples of electrolytes include salts, acids, and bases. In the human body, electrolytes like sodium, potassium, and chloride are essential for various functions, including maintaining fluid balance and supporting nerve and muscle function. Electrolytes are crucial in many applications, such as in batteries and sports drinks. In batteries, electrolytes facilitate the flow of electric current, while in sports drinks, they help replenish lost minerals during physical activity. Maintaining proper electrolyte levels is vital for overall health and performance.