Due to their small size, low weight, and extremely high power density, these batteries are used in numerous applications: LED flashlights, digital cameras, laptops, power tools, medical technology, e-cigarettes, e-bike batteries, e-mobility, and more. Users benefit from the rechargeable nature and high energy density of these batteries. The device can be used for a longer period without needing to recharge or change the batteries. With Li-Ion technology, the memory effect is eliminated: the specified capacity essentially remains constant.