Rubber washer fell out on removing battery!

[drfireball]

Hi all - new owner of Levo 2019 Comp - three rides in and loving every minute. Fitted invisitape kit and went tubeless tonight - first time I've removed the battery and a black rubber washer has fallen out - thought it might go between the bash guard and the frame but it is too thick. The battery goes back in without any issues. Any ideas?
Oh and Happy New Year to you all

 

[Maastricht]

Maybe this helps?

 

[drfireball]

Maybe this helps?
View attachment 9489

Thats perfect thanks - I am immediately at ease