Model S: Charging
Jason Hughes (Tesla tinkerer) has bought the first 100kWh battery pack from a wrecked car and took it apart.
Lots of details here:
http://skie.net/skynet/projects/tesla/view_post/20_Pics+and+Info:+Inside+the+Tesla+100kWh+Battery+Pack
In a nutshell:
12 more cells per module ( I thought so!)...