Mobile charging device for electric bicycles, electrical connection element and charging device for electric bicycles

The mobile charging device (100) has an electric discharge port adapted for connecting to a charging port (80) of an electric bicycle (70) or charger. One end of a cable (110) is connected to the electric discharge port, while the opposite end is connected to a power connection element (120,150). The power connection element is provided with electrical connecting elements, where the electrical connecting elements are formed according to International organization for standardization 11446 (ISO 11446). An independent claim is also included for an electrical connection element with an electrical connector assembly.