There is  voltage above which sulfation will not occur. An
electropotential issue afair.

Notional figure is slightly under 2.1 V/cell.
No doubt varies with temperature, phase of Moon and more.

____________

http://www.batterystuff.com/tutorial_battery.html
Sulfation of Batteries starts when specific gravity falls below 1.225
or voltage measures less than 12.4 for a 12v battery, or 6.2 for a 6
volt battery




         R

> Lead-Acid lore claims that a battery maintained at less than full-chg
> for any great length of time will lose the unused capacity to sulfation.
--=20
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