Haibike Trekking 7 odd bits help

[Fungustoon]

Hi ...I have just got my HT7. There were some extra bits i cant work out what they.re for. The manual is useless in German. Any help much, much appreciated

 

[Fungustoon]

What.s the small round battery for?

 

[fooferdoggie]

the red pieces are disc brake spacers you can use them when you remove the wheels and put them between the pads.

 

[Fungustoon]

Thnx mate!!!
The black thing has a 6mm allen head.