Brackets and mounts
Power Bank Enclosure Multi-Part
- Bounding box
- 655.0 × 92.0 × 66.3 mm
- Engine
- Precision B-rep
- Parameters
- 45
- Published
- October 24, 2026
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Free to download and use. See the terms.
The prompt
Create a professional, compact and rugged 3D-printable enclosure for a rechargeable power bank. ELECTRICAL CONFIGURATION: - 3 × 3.7 V 7200 mAh lithium batteries - Battery arrangement: 3S1P - Nominal battery voltage: 11.1 V - Maximum charging voltage: 12.6 V - Total capacity: 7200 mAh - Approximate stored energy: 80 Wh ENCLOSURE DESIGN: Create the enclosure as TWO separate printable parts: 1. Main bottom housing 2. Removable top cover The enclosure must contain three individual battery compartments arranged in a straight 3S configuration. Add internal supports so the batteries cannot move inside the case. Include dedicated internal mounting space for: - 3S lithium-ion BMS - DC-DC power conversion/charging circuitry - USB-C module - USB-A output module - Digital battery percentage/voltage display - Power switch - DC connector EXTERNAL PORTS: Place the following on the front/side panel: - USB-C port - USB-A port - Digital display window - Power switch - DC input/output connector Make the USB ports and DC connector openings accurately sized for their respective modules. MECHANICAL DESIGN: - Wall thickness: 2.5–3 mm - Rounded external corners - Internal reinforcement ribs - Screw bosses for joining the top and bottom - M3 screw holes - Ventilation openings where appropriate - Cable-routing channels inside the enclosure - Strain relief around external connectors - Battery retention supports - Minimum 0.3 mm clearance between mating printed parts - No overlapping or self-intersecting geometry - All parts must be watertight/manifold and suitable for FDM 3D printing Make the design parametric so the battery compartment, PCB compartment and external dimensions can be changed later. The final design should look like a professional commercial power bank rather than a simple rectangular box. OUTPUT: Generate separate printable files for: - Bottom housing - Top cover - Optional internal battery spacers - Optional mounting brackets Export in STL and preferably STEP/3MF format. IMPORTANT: Do not guess the battery, BMS or PCB dimensions. Create editable parameters for their length, width and height so the exact measurements can be entered before final STL export.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall length | 230 mm | 180 – 300 |
| Overall width | 90 mm | 60 – 150 |
| Bottom housing height | 45 mm | 30 – 70 |
| Top cover height | 12 mm | 8 – 20 |
| Wall thickness | 2.5 mm | 2 – 3.5 |
| Outer fillet radius | 2 mm | 0.2 – 3 |
| Mating clearance | 0.3 mm | 0.1 – 1 |
| Strain relief pad depth | 2 mm | 1 – 4 |
| Battery pocket length | 65 mm | 40 – 100 |
| Battery pocket width | 20 mm | 10 – 40 |
| Battery pocket height | 20 mm | 10 – 40 |
| Battery clearance | 1 mm | 0.2 – 3 |
| Battery bay rib thickness | 2 mm | 1 – 4 |
| PCB length | 80 mm | 50 – 150 |
| PCB width | 50 mm | 30 – 80 |
| PCB standoff height | 15 mm | 5 – 30 |
| USB-C opening width | 8.5 mm | 6 – 12 |
| USB-C opening height | 3.2 mm | 2 – 6 |
| USB-A opening width | 14.5 mm | 10 – 18 |
| USB-A opening height | 7.5 mm | 5 – 10 |
| DC connector opening size | 10 mm | 6 – 14 |
| Power switch opening size | 8 mm | 6 – 12 |
| Display window length | 40 mm | 20 – 80 |
| Display window width | 20 mm | 10 – 40 |
| Ventilation slot width | 3 mm | 1 – 8 |
| Ventilation slot length | 15 mm | 5 – 30 |
| Cable channel width | 4 mm | 2 – 8 |
| Cable channel depth | 1.5 mm | 0.5 – 3 |
| Screw boss outer diameter | 6 mm | 4 – 10 |
| M3 clearance hole diameter | 3.2 mm | 2.5 – 5 |
| Counterbore diameter | 6.5 mm | 5 – 10 |
| Counterbore depth | 3 mm | 1 – 6 |
| Boss edge margin | 10 mm | 5 – 20 |
| Reinforcement rib thickness | 2 mm | 1 – 4 |
| Battery spacer length | 20 mm | 10 – 40 |
| Battery spacer width | 10 mm | 5 – 25 |
| Battery spacer height | 35 mm | 20 – 50 |
| Battery spacer slot width | 3 mm | 1 – 8 |
| Bracket leg length | 30 mm | 15 – 50 |
| Bracket leg width | 25 mm | 15 – 40 |
| Bracket material thickness | 3 mm | 2 – 5 |
| Bracket M3 hole diameter | 3.2 mm | 2.5 – 5 |
| Bracket hole spacing | 20 mm | 10 – 35 |
| Bracket fillet radius | 2 mm | 0.2 – 4 |
| Exploded layout gap | 10 mm | 5 – 40 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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