The present invention relates to an electrical connection system for charging a battery of a vehicle, the system comprising: a core element having a charging plug side for receiving a charging plug and an inner side substantially opposite the charging plug side, the core element comprising a first current section with a housing; and an interface module mountable to the inner side of the core element for electrically engaging with the first current section, wherein the interface module is configured to establish an electrical connection between one or more inner vehicle terminals and the first current section.