If no one else wants to say anything...
It does not look like anything special to me.
There are a few desulfating schemes out there, and at least one of them is a bad idea IMHO.
The one in the link does not have any setting but On or Off.
"Every time you start the charger it will first go into the disulphide mode and remove as much sulfate as it can."
I hope that does not mean it is one of the schemes that drains the battery before charging it.
I would try to get some clarification as to what the specific desulfator operation does and how, but I bet nobody can tell you.
Running from a genny, I would want one a little more old school, like with an analog ammeter.
Depending on how the 'microprocessor' works, it may do things based on a 220AH bank.
It would be nice to see if the genny was running just to put 1/4A into the bank.
When the automatic shut off shuts it off, then the genny is running doing nothing.
I have a microprocessor controlled fully automatic charger. It does 10A, or 0A.
It doesn't take long before it is spending a large percentage of the time not doing anything, and the percentage gets lower and lower, which is fine for grid power. It does not sound so great if it was being powered by a dedicated genny.
G-
