Lipo supposedly has an optimum discharge temp of 100F. I read of some who warm their lipos so when they start a race, they do not have to wait for the discharge itself to warm the lipo up - they start right off with optimum amps at the highest volts.

Some elec plane guys I occassionally hang with put the packs in their shirt pocket an hr or so before they're going to use them if its cold and bring them up to near body temp. They're the ones telling me they can see a drop when flying when the lipo gets cooled down - speed drops and they can't fly as long as in warmer weather.

I didn't know about limiting the charge if temp was low. Its not much of a prob where I live.