Alistair that’s interesting. Do you have the single aft cabin version? Because it sounds like you have much more space under that aft cabin than the double cabin version provides. Also I’m guessing a Victron Smart charger is not the original.
Enrico if you have trouble finding the charger look for red and black cables attached to the battery studs. These will be around 6mm to 10mm cross sectional area (the main battery cables will be much bigger). Locate these and follow them back to source.
The membership association for owners of Dufour Yachts