Does anyone have any experience with the Lynx / Ski-doo gps / telephone warmer? Will it keep warm even while driving in -20 C? I have a Samsung Galaxy Note with a great topography map application called Ultrapoint DoGPS. Even in my jacket pocket the battery in the phone gets quite cold and battery power drops considerably. Also taking the phone out to use in -20 is not fun. I guess it's also possible to rig up a y joint to have the warmer on and charge the phone at the same time.
The picture attached is from Lynx accessories and costs about 100 euros.
PS Love my Lynx Commander