Rear battery cap for VanMoof S3 battery

A direct-fit, 3D-printable drop-in replacement for the Vanmoof S3 battery’s rear endcap—ideal whenever the original cap’s handle retainer or heat-set insert breaks off.

🔧 Key Features

Exact fit for Vanmoof S3 battery housing, using the factory mounting screws

Central pocket designed to accept a fresh heat-set insert (M4) for secure attachment to the bottom plate

“Hole-hack” printing: unsupported holes are oriented and sized to print cleanly without extra supports

Robust geometry: thick walls, chamfered edges, and generous fillets to resist everyday knocks

🖨 Recommended Materials & Settings

Filament: ASA or carbon-fiber-infused PLA/PETG for UV- and impact-resistance

Layer height: 0.20 mm, 3 walls min.

Infill: 50–100% (higher values offer maximum strength under prying or torque)

Nozzle: 0.4 mm or larger

Supports: None required—hole-hack geometry handles overhangs

📦 What’s Included

3MF project file (all orientations, assemblies, and print settings pre-configured)

🔩 Installation

Remove the broken endcap and clear any residue from the original screw holes.

Press in your new M4 heat-set insert using a soldering iron or heat press.

Align the endcap on the battery housing and tighten the 5 original screws.

Give it a gentle tug to verify the insert is seated and the snap the handle into the retainer holes.

This purely functional part is part of my ongoing openmoof project—designing durable, user-serviceable replacement parts for the Vanmoof S2/S3 family. Let me know if you need additional tweaks or variants!