Both cables can be fitted with ferrite clamps, close to the charger. After de-noising the charger and fitting ferrite clamps, with the charger and scoot mobile at abt. 5m distance from my loop antenna, nearly no noises could be detected anymore.

Best use ferrite clamps with a big hole (18mm) as possible. The cables can be wound several times through thier hole, making them much more efficient. See to it that both ferrite halves rest absolutely flat at each other without any air space. If necessary use a ty-wrap around the clamp. A second ty-wrap can keep the cable as close as possible to the outside of the clamp.

Shown below is an experiment with a ferrite ring-core (mix61). The mains cable is put zig-zag through it. The connectors needed not to be removed.  Strange? But it worked.

Both in- and out going cable parts must NOT against each other to prevent capacitive coupling. Best use a core with high Ui, f.i. 2000-10000..