Electric vehicle battery packs and motors currently cost about $4,000 more to manufacture than a comparable fossil fuel-burning midsize sedan engine. By 2022, the difference will be $1,900—and will disappear by mid-decade, according to investment bank UBS Group AG .
2010年1月時鋰離子成本約 $1,000 and $1,200 per kilowatt-hour. ，十年後為 $125 per kilowatt-hour
元毓說 