Sok 100ah bluetooth soc reading auto reset

Just got new sok batt. Wondering if the soc % is automatically reset to 100 % upon full charge? I've done the bms reset as recommended for new battery, and the soc did reset ok, once fully discharged. Just wondering if I must fully discharge to get it reset (recalibrated effectively)? Or, does the soc also get reset at the absorbtion voltage, a much more common event for me? In past uses of lifepo4 batts, I never discharge below 20%.