The SkyFi III ran out of batteries on me the other night and I want to ensure this doesn't happen again. I have a Celestron Lithium Power Tank to power the scope when using it remotely but I am running an extension cord and AC adapter out to my mount when I'm using it at home in the yard. I was planning on doing the same for Ski-Fi III.
I have 2 questions about using the Ski-Fi III in cold weather:
1) Is it OK to power it from a USB charger (AC charger or portable power brick) while I'm using it in the cold rather than running it from the built-in batteries? The manual says not to charge it when it's cold but I'm wondering if it's OK to use it plugged in while in use in cold weather?
2) If it is not possible to use it plugged-in when it's cold out, is it OK to recharge it after each use to ensure it will have enough power when I need to use it? Will this have a negative affect on the battery life? How far should I let the battery run down to before recharging to get the optimal battery life?