Mystery charging port grommet

[justanotherdrunk]

Pretty sure is was left by the public L2 charger I used today

Didn't notice until I tried to plug in at home

 

[I33t]

No port covers?

If you had the covers you would have noticed when you tried to refit them after charging...

 

[beachfitrob]

It's the rubber ring inside a J1772 plug. For water proofiness and such.