I apologise if this is covered elsewhere.
To my knowledge there’s no 12v sockets in modernish Eribas?
I haven’t seen any in my 2016 Troll and don’t remember any in the previous 2009 Troll either. Seems strange that Eriba don’t seem to make it easy ti go off grid.
Or am I wrong?

That seems to be right. There wasn't one in our 2018 Triton 420GT. We had one put in by our local caravan technician. I sourced one from Clearcut Conversions - they do a surround that matches the original Eriba ones:
https://clearcutconversions.co.uk/produc...le-usb-sockets/

Have you looked in the end of the light fittings? In older vans there was a 12Vdc supply in the end of the fittings under the wall cabinets. Lots of people didn't know they were there.

If not, it's relatively easy to wire in a 12V supply or even a USB supply which is what most people want these days.

Loads of posts on the forum detailing how to do it.

Here's a link to fitting a USB charger socket.

Fitting a twin USB 12V 4.2A charging adapter

We have 2 x 12v sockets in our Eriba (2002). They are at the end of our strip lights at the front and back of our van. The back one we also use for our rear view camera when we are on the move. We use them when we are off grid to recharge our telephones and watch tv on our laptop. Have been away for 5 days off grid and had no problems.