Just bought a 24/12V converter to try, and the output is 12.0V. It would be nice to have an optional voltage trim for these converters to adjust the output voltage from 12 to 14V.
The DC-DC CONVERTERS are intended to supply a constant voltage and are not intended to feed a battery. There is no way to control the current except for the design maximum current the converter can supply and this is an approximate value.
What you want is a DC-DC CHARGER. These units provide proper constant current for bulk phase of charging and constant voltage for absorption. That is, a proper battery charging algorithm.
Some of the other models can be adjusted with a small screwdriver through a hole in the casing. And it’s a handy feature.
But with the IP67 rating of that unit, a hole in the casing would be taboo. So the option removed for that reason is my guess.
What would be nice is a 5th wire that could be connected to ground for 12v, to +Ve out for 14V or with a divider to set somewhere in between. That would retain the IP67 rating.
The CC output for charging is not really required, but the CV output that can be trimmed is ideal for basic float charge.