So, the only thing that looks like an identifier in the liner says PO#MW051315. I Googled this and couldn’t find anything.
I went on their website and looked up their old manuals. The closest one at can find to my jacket is in this manual from 2018:
2018 Mobile Warming dual power jacket manual. Only mention I could find of voltage is a reference to 12V Y-connectors, so I guess it’s 12V. The jacket has four barrel connectors: one in each of the sleeves, one in the right pocket, and one at the back interior of the jacket near the bottom. I assumed this was for connecting to pants but the 2018 manual says a Y-connector is needed to do this, so I have no idea what the latter connector does.
It’s very possible this was an older model jacket as I think I bought it around 2020 or 2021 on clearance at GP.
I cant find my calipers but by eye it looks like the barrel connectors have OD 5mm and ID 2mm.
Pictures of connectors.
View attachment 70392