There seems to be a belief that the A/C is involved in battery cooling from alot of people. I don't think it is though. I belive its just air cooled by a fan that pushes air through the battery and out that vent on the back of the car. It doesn't use the A/C, I believe.

I've had mine up on a lift. There weren't any coolant lines headed back there that I saw. Just two honking orange power cables.

Someone else on this seemed to imply the A/C was connected somehow... but other than keeping the cabin cool (and presumably the battery that way--but not very efficiently) I don't think its true. I haven't any PROOF of that... but I have yet to see proof of the opposite.