What do the batteries for newer electric cars cost? The tesla for instance.?

Answer 1

NiMH batteries are $5000 to $10,000 to replace.
http://www.hybridcars.com/technology-stories/battery-replacement-costs.html

Li Ion batteries are more expensive. And you pay for the amount of capacity too. I remember looking up one electric car, and the cost to upgrade to the optional lithium ion battery was $35,000 (yes, thirty five thousand).