A slightly more material efficient and versatile AAA battery Gridfinity bin.

3U + 4.4mm tall, making it the same height as a 3U bin with a stacking lip (See photos for visual)

This design has the additional (and unintended) feature of being able to hold a random coin cell in empty slots

Please note that the photos show a version with an incorrect corner radius, the uploaded files have this corrected

The fit is somewhat loose, as the slots have a 1mm clearance to ensure compatibility with all AAA batteries.