CR2016 Battery Box - Gridfinity

perfect, thanks

Works as advertised. (edited)

Gridfinity shape, but lacks components of the standardized format, notably screw holes in base for magnets.

 https://www.printables.com/model/417152-gridfinity-specification (edited)

Works, wish the wells were just a tad bit deeper to prevent batteris from falling out but if your gridfinity base is secure it shouldn't be an issue.