I have a 100 aHr bank in my teardrop and its been two full months since the PV panels have seen sunshine. I've noticed the voltage has dropped to 12.2v from around 13.2v when it was put away in the garage. While I realize that is still quite well charged I'm wondering if I should pull the bank and bring it indoors for a little charging boost back up to about 90% full. At this point there is virtually no chance of the bank achieving anything above 32 degrees until maybe April.
Yes, there is a slight draw on the battery which does not need to be maintained; just ammeters and the solar charge controller readouts. And I don't want to install bee hive heaters, at least this year.
I've read several topics of advice on these LFP banks that they can be stored below freezing with no harm. Am I wasting my time pulling the bank? If I reinstall after recharging should I just leave the battery leads off for the duration of the winter?
Thanks, Tim