We keep our unit indoors, also. Not climate controlled, but dry. (It's a MH, but still has batteries that need to stay charged.) Over winter, I use the battery disconnects and hook up the battery tenders.
During the camping season, I do not usually plug in to 110v AC between trips unless we are not going out for a while. Then, I might plug in a day or two ahead of an outing just make sure the house batteries are well charged.
I also installed a battery disconnect on the negative terminal of our house batteries that I often use. There are things on the MH, as there are on TT's that tend to draw current, even if the battery disconnect inside the TT or MH is used.
I know this may be confusing, but hang in there, others will chime in and you'll get a routine down.
Bob & Nancy
2005 ASLYG 30 SO
2009 Wrangler Toad