and so....
Albert came home yesterday .... to my great joy. After giving him a hug and a kiss I reset the CCU to correct date and time, the fridge this time was on as it had to be tested under load. the batteries showed 100%, and I had been reassured that they had been tested and found to be good. However, just to make sure, I left the fridge on and the vehicle without hook-up overnight to see what the power loss would be.
This morning the batteries were showing 60%, more than I have ever lost overnight before ... but it was a warm night and the fridge had been running.
With bated breath I plugged it into the mains.
Up popped the "Charge" symbol.
Brilliant.
This afternoon, just popped out to load Albert up for the off on Monday ...
and ...
guess what. It wasn't charging.
Well, at least it charged a bit, and it does now also charge from engine generator, as long as I don't go away and leave it on hook-up for a few days with things in the fridge I suppose I'm alright. That at least is progress.