Just like my 9v box; got tired of digging around in my junk drawer for the batteries.

Designed to hold 24 AA as 4-packs. Only one pack needs to opened. If you order Amazon Basics batteries you will need two of these cases.

LFG

Update 02-08-2019: After printing the models the second time, I realized I forget to chamfer the edges of the lid. I have corrected the model and have uploaded the revised STL.