Gridfinity 2x2 (56mm) AA battery case

This battery case uses a 2x2 Gridfinity format and holds 16 AA batteries. Inspired by @scheff's design (https://www.printables.com/model/374789-gridfinity-collection-solid-bins-for-customization), the bottom of the case can be attached with magnets, supporting the magnetic Gridfinity base plates. You can also check out my other battery case designs: Gridfinity 2x1 (35 mm) CR2450 Battery CaseGridfinity 1x1 (35mm) CR1632 Battery Case