I wanted to mount the spare battery of my new 16.8V drill to my tool board, so I designed this holder. Mounts with two countersunk 3.5mm or 4mm wood screws.
Print as-is for a snug fit that would also hold the battery safely in a car/truck. Scale up in X-Y-Z to maybe 102% for a looser fit.
Please leave a like and post a make if this is helpful for you :)
Since the battery had an ugly and crooked Chinglish warning sticker on it, I also designed a small glue-on cover that goes on the bottom of the battery instead of the stupid sticker. Print on a structured bed surface and let the nicely structured surface face outside.
I use a CC/CV buck converter module for charing these batteries off of a 24V supply. If you want to do the same, here's my model for the housing that fits such a module:
https://www.printables.com/model/1142984-box-for-buck-converter-module
Update: I now also added a holder for the mains charger / wall wart.

The author marked this model as their own original creation.