Winterize or not?

We have a Victron system in our camper that we plan to leave parked on our property when we go back to get my house ready to sell.

It gets very cold here in the winter and I was wondering if you all have any suggestions/advice on what, if anything we should do to try and keep our system and batteries as protected as possible during the extreme cold.

Thanks!

How cold does it get and do you have shore power at your location?

A common problem will be the batteries at temperatures below 0 degrees Celsius if they do not have internal heating.