150mah RC battery holder

I have several small RC helicopters, and wanted a case to hold the batteries. I have seen other holders on Thingiverse but wanted something I could take into the field. So I built one with a cover. The case holds 24 batteries, and has a large "1" and "0" on the front to denote charged or spent batteries, holds 12 of each.

This works very well with E-flite batteries, both 25C and 45C. I have not tried it with other batteries, if your batteries are slightly larger you may want to increase t