Lithium batteries have really really bad performance in cold weather(not even talking -40, like 32 degrees for 10 minutes out and your phone will absolutely shrivel)

In the coldest days of NYC winters my Nexus 6p would reboot if I tried to use the camera. In cold conditions lithium batteries have difficulty keeping voltage steady when there's a sudden amperage spike from turning on the camera hardware. If it gets even colder just turning on the screen can cause the voltage to drop enough that the phone will malfunction.

Batteries aren't designed for such low temperatures.

I thought one of the advantages of lithium cells over other chemistries was cold temperature performance.

frozen lenses