I do not have a P4 but in the past, the number of charges was termed 'cycles' and was not '1 to 1' so as to equal the number of times the battery was connected or plugged into the charger or similar.
It was every time the batts. capacity was added. So, 2 50% charges equal one cycle, etc.
There is no benefit to a LiPo for such discharging to 8% in practice.
It is believed to have been implemented to help keep the data-logger or similar accurate within the smart or intelligent module.
Maybe this is no longer required and the issue dropped from the manual.