This is the current standard in electric vehicle batteries, offering good energy density, power, and fast charging ability. The life of a lithium-ion battery is estimated to be the same as the life of the car (eight to ten years). Of course, ‘end of life’ here does not mean a car or its batteries won’t work – after 10 years a lithium-ion battery is expected to be 80% still efficient, so they will still be usable – replacement will be a choice, not a requirement.