It always seemed to me that the Model S's two settings might be better described as "pushing it" and "really pushing it". Chevy's maximum state of charge is 80

It always seemed to me that the Model S's two settings might be better described as "pushing it" and "really pushing it". Chevy's maximum state of charge is 80%. The Model S's 90% is pretty surprisingly high, but of course the Model S battery chemistry (Lithium Nickel) is different from the lower-charge one in the Volt (Lithium ion Phosphate).