Interesting link.
The screwy31 is a 12v group31 USbattery, and I can say the 15.3v finishing/absorption voltage, was key to keeping the specific gravity walk every cycle down to a minimum when cycled deep, daily.
14.7v was a joke and Specific gravity would tank if all it got each day was a few hours of 14.7v.
The 12v battery in that link says a 15.5v absorption voltage! And only 15.6v equalization.
Now a word from out resident USBattery nemesis......
He might start sputtering something about Herb Tarlick and paisley ties :)