My SkyFi router shuts down in the cold. I have to warm it in the car to get it to start again. My guess is that it's the battery.
When I strap some hand warmers to it, it lasts much longer - maybe 3 hours max.
I'd like to use a 12 volt adapter to power the SkyFi unit from my Meade power tank.
I could bring a 12 volt inverter to power SkyFi via it's own 110v charger, but that seems stupid.