cwerdna
Well-known member
Regarding density and size, http://nissannews.com/en-US/nissan/usa/releases/overview-2018-nissan-leaf says
The new battery design adds energy-storage capacity without increasing the size. The battery pack occupies the exact same dimensions as that of the previous-generation LEAF. The individual cell structure of the laminated lithium-ion battery cells has been improved, representing a 67 percent increase in energy density versus the original 2010 LEAF model.