He also says he had to install a 240V socket it in his garage because apparently though you can charge it on 120V in a pinch, apparently it can cause damage to the batteries. That's according to Nissan.
I have never heard this and am considering a Leaf (time frame is next year). I was planning to 120v charge so I did a little googling and still can't find it. Not saying it's incorrect, but it seems odd I haven't heard of it. I actually heard rumors of the opposite... fast charging was worse.