Interesting - could you elaborate on these charging requirements? I understand that in flooded batteries (MF or not) lead-calcium requires a lower float voltage and higher equalization voltage, but absorption voltage is 14.1V (2.35V/cell) for PbCa vs 13.8V - 14.7V (2.3V - 2.45V/cell) for PbSb and PbSbSe. I might also have some Daewoo documentation in Urdu that are sent to battery dealers. I'll review those and post them here as well, the voltage ranges might differ.
In either case, I'd wager a lot of people's alternators in older cars are not outputting that voltage. I've seen electricians call 13V with accessories off "good enough."
And I've seen you mention the build quality before, but my battery dealer's counter to that was "saaron ki patli patli platen hoti hain." The only way to find out, of course, is to cut one of each open. I intend to do so. Battery dealers and manufacturers are running a racket here.
The only reason I've chosen the Daewoo batteries is the pre-filled electrolyte; if it fails early, it's their problem. The most I can do to verify is to sacrifice one deep discharge cycle at C/20 and tabulate state-of-charge vs. voltage and Ah yielded. Even then, SLI batteries aren't fully formatted out of the box, so unless the Ah yield is massively different, I have to accept it. Temperature-controlled CCA measurement is also an option, but I don't have the equipment for that yet.
On the other hand, I can see the seawater being poured into a new flooded battery, so I know it's bad from the very beginning. I will visit the dealers @capsat recommended and see how they prepare their electrolyte.
