What does an EV battery cost and how long does it last?

 All I really know comes from years of experience with lead acid car batteries, the ones that crank your engine to get you started.  Those last four winters and cost $60 to replace.   The lithium batteries in EV's cost a lot more.  Maybe a quarter of the cost of the car when new?  Maybe worse, like one half the cost of the new car?  New EV's are like $60,000 so a battery replacement is a big deal.  Might be cheaper to just buy a new EV.  And that ain't cheap.  I have never seen anything on lithium battery life, might be anything, from a year or two up to 10 or 20 years.  I have no idea what the real answer might be.  It would be nice to know before you buy a battery car.