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.


     Standard charging cable

    The standard charging cable is designed for mobile use. All protection and communication devices of the standard charging cable are integrated in the so-called "in-cable control box". The volume and

     Charging stations

    Permanent charging station This version of the Electric Vehicle Supply Equipment must be installed permanently owing to its size and electrical requirements, e.g. at the house or in the customer's ga

     What must be observed when charging the high-voltage battery unit?

    It is not permitted to simultaneously charge the high-voltage battery unit and fill the fuel tank When the charging cable is connected, do not fill the fuel tank and keep a safe distance from high


     Split cooling

    Split cooling is a new development for the B46TU engine. This cooling concept is a modified version of which is already used in the N63TU2. The Split Cooling function uses the electrical Split Cooling Valve (SCV), to enable on-demand decoupling of the crankcase from the coolant flow both in the w

     Quick search

    Concept Depending on the equipment, Points of Interest and addresses can be searched for by entering a sequence of letters or by searching in the navigation data stored in the vehicle. All entries are displayed that include this text string. General information It is possible to search simultaneous

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