Sadly, it's time to close up the TT for the year. I'm planning to leave it parked beside of the garage, which will help shield it from the winter winds. When not used in the summer, I keep it plugged ...
If you have a smart converter then it's your choice - I keep my RV plugged in largely because it keeps my chassis battery charged up and if ice storm and loose power I can retreat to rig without having to lug batteries etc.