None of the LEAF batteries have any cooling. Strictly heat conduction through the case and into the ambient non-moving air.
See Correction Later In This Thread: There is some air movement past the battery case when the vehicle is moving.
But some of the LEAFs do have battery heating. The "Cold Weather Package" that was optional on late build 2011 LEAFs, and is standard on 2012 - 2013. The cold weather package battery heater comes on at -20C / -4F. My recollection is that the battery heater turns off at 14F.
The LEAF battery chemistry is near useless if it gets much below -10F. A 2011 LEAF without the "cold weather package" should not be used in conditions where the battery can get to -10F. It should be left in a garage where hopefully there will be enough heat from the attic to keep it above -10F.
I don't think Nissan has been very clear about what the risk would be of a LEAF battery getting extremely cold, say -30F or colder. If the status of charge was high enough before the battery got that cold, it might be OK. The Nissan software protects the battery from getting to a level that can permanently damage the battery, unlike the Tesla Roadster that had no such protection. There were some Tesla Roadster owners that did mess up and permanently damage, aka Brick the battery, and Tesla would not cover it under warranty as the owner's manual warned about the risk.
On a LEAF without the battery heater, I don't think it would be very prudent to leave it with a very low status of charge and let it get much below -10F.
Even on a LEAF with the battery heater, it would be better to make sure the status of charge is kept high enough to keep the battery heater working in conditions below -10F.
Last edited by TimLee
on Fri May 10, 2013 3:46 am, edited 1 time in total.
Man. Date: 03/10/11, VIN # 2026
Blue Ocean, 2011 SL-eTec