I graduated from a renowned
I graduated from a renowned battery prpgram, and I can tell you it is expected for the Nissan battery to lose capacity rather fast, especially in hot environment, even the Chevy Volt will lose capacity over the years, though slower, I will not buy Leaf, nor Volt, fearing the degradation of the battery.
In the case of chevy Volt, people has a tendency to make the battery fully charged whenever possible, expect your battery to lose capacity sunstantially after 3-6 years.