"Hi-tech" doesn't make it immune to the laws of nature. Heat is energy and most materials are less energetic when cold.
Any energy stored in a lithium battery came from electrical energy that had been converted to (and stored as) chemical energy, no different from a lead-acid battery. And it sits there waiting to be converted again (an inherently lossy process) from chemical energy back into electrical.
So it's not like there's a herd of wild electrons trapped inside, all champing at the bit and waiting to be released. There's a chemical reaction that has to take place. Chemical reactions occur in the electrons and electrons slow down when the atom they surround gets colder. Slower electrons, slower reactions.
A few obscure chemical reactions accelerate under cold conditions but as yet no one has figured a way to use any of them as an electrical energy storage medium.
It's long been known that if you lived in Buffalo, NY or Minot, ND, it would be pretty silly to buy a battery-only EV (unless you also have an F-150 in the driveway).
Thank you for the info.