A method of electric vehicle (EV) battery nominal zone-aware charging communication executed by an supply equipment communication controller (SECC) of an EV supply equipment (EVSE), the SECC establishes a communication connection with an EVCC of an EV, and the method includes the following: (a) receiving a service selection message from the EVCC; (b) receiving a battery characteristics report request message from the EVCC; (c) based on the messages received from the EVCC, estimating a nominal zone of the battery for charging and discharging and planning a charging schedule for EV battery nominal zone-aware charging; (d) during the charging and discharging of the battery, the SECC receives from the EVCC a present state of charge (SOC) of the battery and a present status of the battery to execute the charging schedule for the EV battery nominal zone-aware charging, so as to avoid accelerated battery degradation and to extend battery lifetime.
