Yesterday morning I did a skitour from Rickatschwende to Lank on the Bödele above Dornbirn and Schwarzenberg - I took my dji mini 2 to capture the epic morning light above the mountains.
I used all my three batteries, keeping them warm in the backpack next to the tea bottle.
Get a handwarmer that charges by USB and put it in the bag on low with your batteries as they work for about 10 hours and are cheep and also good for your hands on a cold day.Fantastic work.