I have used the SkyFi III a few times this winter with mixed results in the cold weather. The first time I tried it I had a full charge and took it out for about an hour and used it for about 30 minutes. The temperature was cold about 5 above. I then turned it off and tried it again a little bit later and when I held the red button to turn it back on, both the ON and Charging light would flicker and would not stay on. So I brought it back in the house and waited about 5 minutes before I could power it back on and I checked the power and it was at 70%.
I did the same thing tonight where I used it for about an hour in 20 above temps and then turned it off and used my internal WiFi built into the Celestron mount. I then when back to turn on the SkyFi III about 30 minutes later and I had the same problem as the first time where the ON and charging lights would flicker when I tried to turn it on. I then brought in the device and turned it back on and there were no issues the ON button stayed powered on. I then checked the power and it was at 44%.
I normally would not turn it off outside in the cold but I am testing other hardware and software that used the internal WiFi built into the Evolution Mount. I reported this issue to Bill while I was troubleshooting a different problem(software bug) and that was the first time I had issues above. When I bring it in the house from the cold, it then starts working again (stays) powered on.
Can this device handle the cold weather we have in Minnesota in the winter?