RE: Cold weather question..
Here in cold Neebraskee I try to fly year round. I have a small six pack cooler, then I wrap my lipos in one of those heating pads that you pop into the microwave for a minute to heat up. Works great for me, If Im going to the park for a quickie I just put the packs in my shirt pocket under the outer clothes and the body heat keeps them warm enough.
happy Flying
Bob