Ah we have 'fasands of the little buggers at work, they get shipped in bulk from the manufacturer, at 30% S.O.C. we then put them through a rigorous screening process, that happens over an 8 week period, don't arsk how the software works (it's beyond my pay grade) but that does all mean nasty charge and discharge cycles and eventually returns them to resting voltage, when the cells are not being used they're stored under ideal conditions of 20 Celsius, and 5% relative humidity.
I can't say anymore due to NDA agreements in my contract of employment