In my case I've got the Roamer seatbase 230Ah battery which has a monitoring app and I have the BT app that comes with the Renogy smart shunt you can see in the picture in my post.
I used the shunt display 99.9% of the time as balanced cells and all the fantastic techno babble you get on both my apps is, to me anyway, chaos. I look at the display and what I need to know is right there, no need to scroll further and in that respect is like the Webasto control alongside which we use very occasionally.
I can physically isolate the battery output and solar input as like you I don't camp when it's cold but realistically you can still draw power from a lifePo4 battery around freezing but don't charge (introduce the solar) until the temperature is suitably above.
If you're in Spain for three months then a big battery and as much solar as you can get will certainly carry you over the dull weather days and maybe you can take some of your kitchen appliances with you for their first holiday abroad?

Just read the above and the Renogy DCC50S B2B has the BT option not the smart shunt... didn't say I was an expert
I used the shunt display 99.9% of the time as balanced cells and all the fantastic techno babble you get on both my apps is, to me anyway, chaos. I look at the display and what I need to know is right there, no need to scroll further and in that respect is like the Webasto control alongside which we use very occasionally.
I can physically isolate the battery output and solar input as like you I don't camp when it's cold but realistically you can still draw power from a lifePo4 battery around freezing but don't charge (introduce the solar) until the temperature is suitably above.
If you're in Spain for three months then a big battery and as much solar as you can get will certainly carry you over the dull weather days and maybe you can take some of your kitchen appliances with you for their first holiday abroad?

Just read the above and the Renogy DCC50S B2B has the BT option not the smart shunt... didn't say I was an expert

