Nissan LEAF 2023 Owners Manual
3.2.2.1. While the vehicle is in use
The Li-ion battery charges the 12-volt battery as necessary when the power switch is in the READY to drive position or ON position.
The 12-volt battery is not charged in the following conditions:
When the power switch is in ACC position.
When the power switch is in the ON position and the shift lever is in the N (Neutral) position.
Owners Manual