BMW 3 Owners & Service Manuals

BMW 3: Overview of charging options

The high-voltage battery unit of the G20 PHEV can generally only be charged by alternating current (AC charging) at a maximum charging power of 3.7 kW. The charging option for the high-voltage battery unit in the G20 PHEV is generally determined by the country-specific charging infrastructure.

The charging powers and the resulting charging times always relate to the power grid and not the charging power used to charge the high-voltage battery unit. The charging power is always less than the available power on the grid. The charging time is a result of the remaining capacity in the high-voltage battery unit, as well as the supplied, market-dependent charging power, taking into consideration the available charging equipment.

Charging with direct current (DC charging) is not supported by the G20 PHEV.

Electric Vehicle Supply Equipment (EVSE)

Components outside of the vehicle that support charging are referred to as the "Electric Vehicle Supply Equipment (EVSE)". "Electric Vehicle Supply Equipment (EVSE)" is thus an umbrella term for all the components and safety equipment that establish the connection to the A/C network and ensure electrical safety during charging. "EVSE" thus stands for the following components:

  • Charging plug
  • Charging cable
  • Wall plug, outlet
  • Wallbox
  • Charging station
  • Ground fault circuit interrupter (GFCI)
  • Disconnecting switch for phase (L1) and neutral conductor (N)
  • Communication circuits (pilot and proximity cables)
  • Display whether the AC voltage network is connected and available
  • Continuous or switched protective earth/ground (PE).

Work on the Electric Vehicle Supply Equipment, for example, the charging plug, charging cable, household sockets or charging stations can only be performed by suitably qualified electricians, and not by BMW Service employees.

The connection between the vehicle to be charged and the AC network is implemented by different variants depending on the EVSE.

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