So far, I've printed a few iterations of the parts of the holders which connect to the tool and battery to test them with my Kobalt stuff, and they are getting close. There may also be a spring detent version of the holder for tools, however that is just an option I'm considering.
Since I decided to work on this from scratch, the tool+battery holders will be my own design (fully), but I already made a pegboard adapter for CarbonForged's Kobalt 24v tool holders, and that model will get posted as a remix, however right now there is only one size (and 3 sizes of adapters is required).
It felt like the tool holder needed some form of lightly engaged mechanical hold on the tools, but I did not want to have a release button for the tool, so I thought a simple spring loaded detent would work OK. That element is now fully designed out, and should work, though I need to find my Harbor Freight tool collection to verify that (it will use a 7/32" x 1.5" compression spring from the Harbor Freight Spring Assortment Kit). Some additions to the now (should be) final design are a pair of battery vent holes in the sides of the mount, a 2 color label insert (so I know what tool goes where), and a cover for the sprint detent stuff. The base of the tool mount is an even 60x100mm, however I may need at least one larger size (maybe 60x120+mm) for some of the tools.
The designs for the pegboard adapters for CarbonForged's Kobalt 24v tool holders are done (in a small. medium and large size to match the bases of the CarbonForged's holders). However I'm having second thoughts on them, since I'm not sure how robust they will be due to the weight of the tools. I'm gonna wait till I can test similar pegboard adapters for my Kobalt Tool mounts, and see how I feel about them before I post those.
Something else I noticed is that Lowes has the deal of the day today for a 2.0Ah and 4.0Ah battery, charger, case and a free tool for $80. This is the best deal on that combo yet (lowest I saw it for was $90 during the holidays). These kits are a great way to get started with the Kobalt lineup, since they have a good selection of free tools to pick from with that combo. If you get the deal, and cannot seem to be able to pick a tool for the free gift (other than the jigsaw), click on the "Choose your gifts" (on the right side under the price) and then click the minus sign "-" next to the jigsaw (to zero that choice out). Then you should be able to pick a tool from any of the dozen or so tool choices they have with the combo.
This design is not yet fully tested however. The peg mount works pretty much as well as I could hope for, and are very solid, but I'm waiting on some 6x40mm springs from AliExpress to test the holders. I may just break down and buy another assortment from Harbor Freight, just to test it, since I seem to have lost the springs from the assortment I thought I had around here.
So far this design has been fun, but I have many hours of work into it already, so I'm hopeful when I get the parts, everything will work (or can be made to work). "Works in CAD" has burned me before lol, but the proof will always be in the prints.
I'm still planning to make a peg adapter for for CarbonForged's Kobalt 24v tool holders, which inspired this whole project (my original plan was just to make the peg adapters, but as you can read above, it didn't quite work out that way :-) Those however will be done after I can test my designs, which will use a similar peg board adapter, using the full weight of the tools on them. I have little doubt though, that the new design with the steel clips will be up to the task.
Edit- I just noticed the peg clips in the third pic below are upside down. It's just a matter of rotating the base 180° though, so not a bit deal, but I thought I'd mention it.
https://www.lowes.com/pd/Kobalt-XTR-3-Tool-24-Volt-Max-Brushless-Power-Tool-Combo-Kit-with-Hard-Case-Charger-Included-and-2-Batteries-Included/1002274128