I can't work on this project anymore as my trial copy of Rhinoceros has expired so I'm posting my progress on the JouleBox and hoping I was actually finished with the latest revisions I was making to the design before it expired.

I wasn't able to do a test print but at a glance it looks like the pieces might at least fit together. I can't even check with my copy of Rhino now crippled.

Oh, I think I found what needed to get done. I had finished the revision only to realize I had borked the insets for the M2.5 machine screws. You were supposed to need 10mm screws but the posts I had designed places the heads flush to the top of the case.

If you print these files as-is you'll need to procure so very long M2.5 machine screws ... 29.1mm long to be precise. What an odd length for a screw ... sorry!

https://www.fastenal.com/products/details/91184

These look like they might be long enough.