The file 'Graupner MX16 18650 Akku 3D Printer Model' is (stl) file type, size is 24.1KB.
18650 Akku for Graupner MX16
http://ziege-one.square7.ch/wordpress/graupner-mx16-18650-akku/
https://youtu.be/Ibr1Y7XHMPI