MBKing M18 Battery Holder V2.0 — Modular Mounting System

Full-cover battery holder that actually protects your terminals — now with a modular mounting system.

Most M18 battery holders leave the terminals exposed. This one fully encloses the battery including the terminal face — so it doubles as a terminal protector when batteries are stored or transported. Many of the others are also just blocks with a slot in them: weak, unimaginative and awkward to use. This one is built for strength, with an angle that makes the battery easy to put in and take out.

Uses Milwaukee's own push-lock mechanism — batteries click in and release the same way they do on your tools. No friction fit, no worrying about batteries working loose over time.

Built-in 10° angle for ergonomic access. Fits ALL M18 batteries from compact 2.0Ah up to 12.0Ah High Output.

V2.0 — MODULAR MOUNTING SYSTEM
Complete redesign of the mounting interface. One holder body, four interchangeable mounting backs — print the one that matches your setup and swap any time:

🔩 Screw mount — wall, surface, or custom mounting
📐 38mm square pegboard — standard European workshop panels (1.0mm and 1.5mm plate thickness)
📐 34mm square pegboard — Blika industrial systems (1.0mm and 1.5mm plate thickness)
📐 ~18.5mm square pegboard — Belzer/Bahco tool trolleys

Pegboard interfaces clip in with no additional hardware. The holder body stays the same regardless of mounting method.

Designed by MBKing (Mogensbæk Engineering), Denmark. Mechanical engineer. Originally designed in 2020, V2.0 redesigned 2026. Tested in real work environments for 3+ years.

STL VARIANTS INCLUDED The holder body comes in 2 versions:

1. No Supports — Print as-is. You'll get minor sagging on the bridge and the top of screw holes — totally functional, just cosmetic. Or use your slicer's built-in support settings if you prefer.

2. Custom Bridge Support (recommended) — This is what I use for production. A custom support body is included that gives you a perfect bridge on the underside. For best results, use a high Bridge Flow Ratio and slow External Bridge Printing Speed in your slicer. Printing this model with custom support, I split the part into objects. Then I print the support with 2 perimeters, 4 top- and 3 bottom layers. Also for the support I enable the "Precise Z-Height" option.

MOUNTING INTERFACES INCLUDED — Screw mount interface — 38mm pegboard interface (1.0mm and 1.5mm plate variants) — 34mm Blika pegboard interface (1.0mm and 1.5mm plate variants) — Belzer/Bahco pegboard interface — 10mm square board insert

3MF project file also included with recommended print settings embedded.

RECOMMENDED PRINT SETTINGS

• Material: PETG recommended

• Perimeters/walls: 4

• Top/bottom layers: 8

• Infill: 15% (gyroid, grid, or crosshatch)

• Layer height: 0.2mm

• Supports: None needed (use variant 1), or use the included custom support body (variant 2)

This is a forgiving design — it will hold up fine with different materials and settings. But for the best result, follow the recommendations above. Print hot enough that the surface has a slight glossy/shiny finish. If your print looks matte, your temperature is too low and you'll get weaker layer adhesion.

HARDWARE Screw mount: 2x stainless steel A2 countersunk screws (M4x20 or similar — not included). Pegboard interfaces: Only one screw required.

MORE FROM MBKING
🔒 M18 Locking Tool Holder — The only Milwaukee M18 holder with a true mechanical lock. Pull-tab mechanism, tested in work vans for 3+ years. Zero failures over 100+ prints. → STL available on Etsy: mbkingmarket.etsy.com
🔧 M12 Adjustable Holders — Clever toothed hinge mechanism that fits ALL M12 tools and batteries. Wall, ceiling, under-shelf — you set the angle. → Available on Etsy: mbkingmarket.etsy.com Full range of physical holders — Premium PETG with stainless steel hardware, shipped within EU. → mbkingmarket.etsy.com