Stromer ST1 electric bike cover/plug for the charger plug.
Source:
https://grabcad.com/library/charger-plug-for-stromer-st1-1
Per the original creator,
trond vidar olsen, "Ninjaflex printed cover works great."
Note: In order to upload this file it was converted from LWO to OBJ at http://www.meshconvert.com/