Modular Battery Station: Wall-Mounted AA/AAA Dispensers with a Fill Gauge

A wall-mounted battery organizer made of separate modules. Load batteries in the top and take them from the tray at the bottom. A 10° ramp rolls the next battery forward, one at a time.

Features

• Fill gauge: a sight window with numbered ticks shows how many batteries are left.

• Modular dovetails: the modules slide together in any order, and their bottoms always line up.

• Hidden keyhole mounts: the screw heads sit inside the back wall, so they’re invisible and can’t snag batteries.

• No supports needed: every part prints upright, as exported.

Included parts

• AA Dispenser: holds 10, 63 × 41 × 160 mm

• AAA Dispenser: holds 14, 57 × 33 × 160 mm

• Dead Battery Bin: 63 × 44 × 100 mm

Print settings

• Material: PLA or PETG

• Layer height: 0.2 mm

• Walls: 3 perimeters

• Infill: 15%, gyroid or grid

• Top/bottom layers: 4

• Supports: none

• Brim: 5 mm, recommended for the 160 mm dispensers, especially on bed-slingers

• Elephant-foot compensation: 0.15–0.2 mm, so the dovetails slide easily

• Minimum build height: 160 mm

Mounting: use #6/#8 or M3.5–M4 pan-head screws, with heads 9 mm across or smaller. Leave each screw head about 2.5 mm out from the wall. Hang the module, press it down about 10 mm to lock it, then slide the next module down onto the rail of the one beside it.