I would never keep the trailer plugged in, even if its in your driveway for any period of time. If you are worried about keeping the battery charged, think about a solar powered trickle charger they are only about $20.00. I don't think the Microwave is salvageable either. .... Good Luck and Happy Camping !!
Vickie, Me, and "Scruffy" our dog make THREE
:W