Lithium-ion or li-ion battery (abbreviated as LIB) batteries are found in many modern-day devices including smart phones. The price of LIB technology has fallen dramatically in the last few years as they are used in electronics, electric vehicles, industrial applications and on the electric grid.
Lithium-ion batteries are rechargeable. When the battery is connected to a charger, the lithium ions move in the opposite direction as before. As they move from the cathode to the anode, the battery is restored for another use. Even in the case of large utility-scale installations, lithium-ion batteries are rechargeable. A typical use would be for renewable energy sources like wind and solar to charge the batteries for use at another time. Electricity discharged from the lithium-ion battery is converted from DC power to AC power via a bidirectional inverter.