Rechargeable lithium-ion batteries use lithium ions as the charge carrier. They are popular for portable devices, electric cars, and energy storage systems due to their high energy density, minimal self-discharge, and slow loss of charge when not in use. Because lithium-ion batteries are lighter and have a better energy density than conventional rechargeable batteries, they can store more energy in a smaller package. They also last longer and require less maintenance than other types of batteries.
