Someone correct me if I'm wrong on following advice on how to tell if a leaf has a 30kwh or 24kwh battery.
A 2017 or newer has a 30kwh battery. The 2015 and earlier have 24kwh battery. When looking at 2016 look at first 4 characters of VIN: if 4th
item is "A" it has 24kwh, but if "B" it has 30kwh.
See also https://fenix.systems/leafbattery and http://leaf380.com for info on
replacement batteries with all new, not rebuilt, cells.