An alternate version of my Apple Vision Pro Battery Holster. This one has a thinner, snap-together design with rotatable clip, similar to the $50 commercial Belkin Battery Holder.
I recommend printing the shell in PETG for a bit of flexibility snapping the battery in, and the clip as well, for flex/strength. This version of the shell should be printed without any additional scaling (100%), as I've already incorporated some relief based on feedback in the comments.
Two types of clips and clip attachments are available (dovetail-style and buckle-style) – they both work pretty well. Give them each a try and let me know which you prefer.
The preferred print orientation for each piece should be per the screenshot below. Supports are only needed on the buckle tabs (or upper edge of the dovetail) for the clip piece.