facory wrote:
Leaving it plugged in is not necessary. By doing so you are leaving it vulnerable to power surges that could damage your converter. If you choose to be sure you use a surge protector. However, there is no need to have it plugged in unless you are planning to use any of the 120 volt appliances. I would also disconnect the batteries for storage. If you have a charger you can charge them a couple times during the winter. Batteries that are charged will not freeze.
x2 ... During the off season, I leave our TT unplugged and pull the kill switch, usually for at least 6 weeks, sometimes 2 months before I plug it back in for a day to bring it back to 100% SOC. With no phantom draws, batteries lose charge very very slowly. And after 6 weeks plus, my two golf cart batteries might still be at 70% SOC or more. It is much better on batteries to let the SOC drop a bit over time before bringing it back up to 100%, than to overcharge and boil the batteries 24/7 once charged. RV manufacturers do NOT spend the extra $$ to install high quality multi stage float chargers. And in fact, 6V batteries at least, are designed to drop to as much as 50% SOC many thousands of times in their usable lives, and are much healthier and long-lived for it that being overcharged 24/7.
