IMHO, your post above was well written and outstanding re clear information transfer!
I believe you've just made the point that 15.XX volts should only be applied when certain conditions have beforehand been met with the battery(ies) .... not all the time as kindof an improved boost voltage whenever one wants to charge a wet cell. I'll have to slow down in my reading, as my reading of some of MEX's posts led me to believe that he might have been advocating the use of a simple and inexpensive adjustable voltage power supply to achieve 15.XX volts at high currents for charging of wet cells each and every time you charge them.
I thought that high wet cell battery charging voltages in excess of 14.XX volts were for such things as stirring the electrolyte within cells, for equalizing among the cells, etc., and as such was only occasionally required for wet cell battery maintenance.
Boy ... am I glad I use dry cells. :S