This article covers the following platforms
MSFS 2024
MSFS 2020
ATS
FSX
Prepar3D

The Systems page shows this data:
SoC (HV) - State of Charge of the high voltage battery. This battery powers the motor and HVAC systems.
SoC (LV) - State of Charge of the low voltage battery. This battery powers the instruments, lights, and other accessories.
Charger - The state of the vehicle charger.
DC-DC - The converter that moves power from the high voltage battery to the low voltage one. In an electric vehicle, it replaces the traditional alternator.
HVAC Temp / Mode - The temperature and state of the cooling and heating system for the battery and motor.