Rechargeable batteries called lithium-ion use lithium ions as the charge carrier. They are a popular option for portable devices, electric cars, and energy storage systems due to their high energy density, minimal self-discharge, and gradual loss of charge when not in use. Li-ion batteries are able to store more energy in a smaller space since they are lighter and have a higher energy density than conventional rechargeable batteries. In comparison to other battery types, they also have a longer lifespan and require less maintenance.
