Nissan LEAF 2023 Owners Manual
4.4.1.1. Full charge has priority
If [Full charge has priority] is turned on, the charge start timer will be advanced in the case the fully charged condition of the Li-ion battery cannot be achieved during the time from the start time to end time. If the fully charged battery condition is not achieved, the charge continues until the Li-ion battery is fully charged.
If [Full charge has priority] is turned on, it is possible that the battery is not charged fully by the charge end time due to the operating condition of the Climate Ctrl. Timer and the tolerance of charging time, etc. In that case, the charging continues until the Li-ion battery is fully charged.
Owners Manual