First off, let me say I'd have bought a Leaf, in spite of everything below, if Nissan hadn't screwed with me so much. (Long story I won't go into here, but I finally got sick of being jacked around and I canceled the order.) But to the battery pack: Unlike some other EVs, Nissan has chosen not to have any sort of active battery cooling. That might not even be an issue if they explained why their particular kind of battery does not need cooling, but they've been very closed-mouthed about all aspects of the car and have refused to explain why their technology does not need it. And even that might not be an issue if they guaranteed some specified battery life, but on the contrary, they specifically exclude loss of range from their warranty. I have a friend who canceled his Leaf order when he was unable to get any explanation from Nissan about why their car does not employ active cooling. Tesla, by contrast, uses liquid cooling (albeit with a different battery chemistry that may have very different thermal properties) and active balancing: Even when the car is shut off the batteries are constantly being balanced, and any time it is on or plugged in, battery temperature is maintained at a set level which depends on the mode chosen by the owner: Performance mode keeps the batteries warmer so they can deliver more current. Again, I'd have been willing to take my chances, if they'd deigned to sell me a car. But I'm wondering if owners have any misgivings. Clearly, if you bought the car you did so willing to take whatever risks you perceived, or else you trust Nissan to do it right even if they refuse to explain their reasons. Maybe some people leased specifically because they didn't trust Nissan about the battery. What are your feelings? Would you have preferred an actively cooled battery pack? Do you feel Nissan would have cooled the pack if there was any need for it? Or did you just want the car so badly that you bought it expecting to have to replace the pack at some undetermined time?