Milwaukee M12 heated jacket

Anybody have one of these? For $275 I'd hope the battery would hold up a year at least.

Realtree Fleece

I have one and when the temperature gets in the 20's the battery doesn't work. I took my on a hunting trip to Alberta Canada to find up the jacket wouldn't function outside. It was in teens when I was there. Anything above freezing and the jacket is great.