A Lithium-Ion Battery (Li-ion) is a rechargeable battery technology that uses lithium ions to store and release electrical energy. During discharge, lithium ions move from the negative electrode (anode) to the positive electrode (cathode) through an electrolyte, and the process reverses during charging. Li-ion batteries are widely used due to their high energy density, lightweight design, long cycle life, and low self-discharge rate. They power everything from smartphones and laptops to electric vehicles (EVs) and renewable energy storage systems.
