Electricity usage when stored/off road

Another one for no heating and we live in Scotland. Never heated a van in 35 years and don't think I ever would. As long as precautions are taken to the water system and to let air circulate inside the van everything should be fine. We do lift the cushions away from the sides of the van and open the overhead lockers. 

As to small oil filled radiators, we use 2 small ones 500 & 800w in our attic room on some nights in winter, yes it can increase your electricity bill dramatically and no we don't have them high just enough to keep the frost out when very cold. 

Besides, I remove the battery when the caravan is stored over winter and keep it in the warmth of my cellar to charge, as necessary, before the first outing in the New Year.

we never heat the van in storage, ever. I have one of those max/min thermometers and I always leave it out near the sink, and I've actually never had much below freezing over the winters (even this one) but summer temperatures often exceed 40C .

I always drain down the tank though and check the battery before a trip. But as we never leave it more than a month between trips it's always been OK.

I think rain getting in is more of a issue than cold? 

you have a cellar? wow, repect! Wish I had one.

Actually my parent's house had a coal cellar, it was a great place to play when young and to transfer B&W film from camera to developing tank when older.

sorry OT

No longer leave the caravan plugged into the mains constantly after boiling the leisure battery   Probably a controller issue as these caravan parts are not the best having had issues early on with poor solder joints in PCB on the main control panel 

Now rely on the solar panel to keep it topped up, with a 24 hour mains plugin before use primarily to cool the fridge ahead of a trip. We park the caravan on the drive with the SP on the south side. We have solar panels on the house that deliver 3x the electricity we use, so evidently in a good spot.

Leave the caravan blinds open about 4 inches at the top on each window.

We do use the caravan year round.

No damp or mustiness at all over the nearly 3 years we've had it and stored on the drive.

Once on a CAMC site we bang the electric heating up full to get the caravan up to temp, as we've paid for the electricity, so we'll use it fully  

i do get annoyed with manufacturers who fit a solar panel and then don't ensure that it keeps the vehicle battery (as well as the leisure battery) fully charged, to me it just smacks of cost cutting...

at the end of the day, if the Hab battery was flat but the vehicle battery charged, at least you could drive the van....

however, the remedy is fairly straightforward...either fit a connection from the 2nd solar panel regulator outlet to the vehicle battery (the charging ratio of the two can usually be configured to suit...) or you could fit a Battery Master which 'charges' the vehicle battery from the leisure battery...