2010 Plug-in conference

Mark Perry, Nissan’s North American director of EV and Advanced Technology, was at the 2010 Plug-in conference in San Jose, CA. We asked Perry why there were no vents for cooling the battery for the Nissan Leaf. What type of battery is it? Perry shows us the battery and how it is situated in the car. Why does this battery have 48 modules and 4 packs?