having same model car with different battery just seems so unlikely, from a used car pricing/selling point would create a lot of confusion I suspect.....Tesla is doing it, but they are in a class of their own.......
Batteries are not coming down in weight and volume as fast as some would like. Presumably Nissan could redesign the pack to use the same technology as the 2016 Volt2. The Volt2 battery kwh increased 11.5% from 16.5kwh for the 2013 Volt1 to 18.4kwh for the 2016 Volt2. The rest of the volt2 EV range improvement was opening up the usable battery percentage from 65% to 75%, and getting 3% out of improved efficiency.
(AER-2013Volt1) * 18.4/16.5 * 75%/65% * 1.03% = 50 miles
The Leaf already uses 87.5% of the battery, and Nissan already had their Lizard battery upgrade in 2015. So maybe all Nissan could realistically get out of the improved 2016 battery technology is another 8%-12% or 24kwh increases to 26-27kwh without a new model. This might be an AER of 91-94 miles. Also, it might require a new battery configuration with fewer cells, and other significant changes. The 50kwh-60kwh Leaf2 with its 200mile range will be a different more expensive model and the base model will likely retain the 24kwh lizard battery pack.
2014 Chevy Volt ...