The wiring should be pretty tight, with the exception of the 40-pin FPC cable. You’ll need to fold this cable and make sure it stays inside the case while closing it up.
Insert the ports on the Raspberry Pi into the cut outs on the top half of the enclosure. If you find the cutouts too tight, you can open them up with a filing tool.
Insert #2-56 3/8 flat phillips machine screws into the six counter bores on the bottom of the enclosure. Hold the two half together while fastening the screws. Fasten them in until you feel they’re completely joined.
This build is pretty much done! You can optionally insert a tripod screw thread to make it mount to any standard tripod.
Insert the tripod screw into the hole and fasten it with a flat phillips screw driver. Fasten it in until the screw is flush with the surface of the enclosure.
Boot up the Pi and hook up your favorite keyboard. The 2500mAh battery should give you about 2 hours of use, but it'll vary depending on your application.
It's from the Raspberry Pi Kano kit.