Gridfinity Battery Holders

There are many options for Gridfinity battery holders, but I designed these for a few reasons. They're all consistent height, with labels and chamfered openings. I've also removed the screw holes in the bottoms of the holders (but retained the magnet slots) so they can be printed cleanly without supports. I plan to add more holders for other battery types going forward as well.

Note, some users complained the AA battery holder was too snug for their batteries. I've included a v2 for this model that should provide more room if the original is too snug.