Brackets and mounts
3S1P Power Bank Enclosure (Exploded)
- Bounding box
- 1580.0 × 90.0 × 50.0 mm
- Engine
- Precision B-rep
- Parameters
- 50
- Published
- October 24, 2026
Download
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 |
|---|---|---|
| Case length (X) | 200 mm | 120 – 320 |
| Case width (Y) | 90 mm | 60 – 180 |
| Overall height incl. cover | 55 mm | 30 – 120 |
| Wall thickness | 3 mm | 2 – 4 |
| Floor thickness | 3 mm | 2 – 5 |
| External corner radius | 8 mm | 2 – 20 |
| Cover height | 8 mm | 5 – 20 |
| Cover lip height | 3 mm | 1 – 8 |
| Mating clearance | 0.3 mm | 0.2 – 0.8 |
| Label recess width | 90 mm | 20 – 180 |
| Label recess depth (Y) | 35 mm | 10 – 80 |
| Label recess depth | 0.8 mm | 0.3 – 2 |
| Cell length | 70 mm | 40 – 110 |
| Cell width / diameter | 25 mm | 12 – 45 |
| Cell height | 20 mm | 10 – 40 |
| Cell clearance | 0.5 mm | 0.2 – 2 |
| Divider rib thickness | 3 mm | 1.5 – 6 |
| Divider rib height | 20 mm | 5 – 40 |
| Spacer wall thickness | 3 mm | 1.5 – 6 |
| Spacer height | 12 mm | 4 – 40 |
| Screw boss diameter | 6 mm | 4 – 12 |
| Screw boss height | 30 mm | 8 – 45 |
| M3 tap hole dia (boss) | 2.5 mm | 1.5 – 4 |
| M3 clearance hole dia (cover) | 3.4 mm | 2.5 – 5 |
| Counterbore diameter | 6.5 mm | 4 – 10 |
| Counterbore depth | 3 mm | 1 – 6 |
| USB-C opening width | 9 mm | 6 – 16 |
| USB-C opening height | 3.5 mm | 2 – 10 |
| USB-C position X | -55 mm | -90 – 90 |
| USB-A opening width | 13 mm | 8 – 20 |
| USB-A opening height | 6 mm | 3 – 14 |
| USB-A position X | -30 mm | -90 – 90 |
| Display window width | 40 mm | 10 – 80 |
| Display window height | 20 mm | 6 – 45 |
| Display position X | 10 mm | -90 – 90 |
| Switch opening width | 12 mm | 4 – 25 |
| Switch opening height | 8 mm | 3 – 20 |
| Switch position X | 55 mm | -90 – 90 |
| DC jack hole diameter | 9 mm | 5 – 16 |
| DC jack position X | 82 mm | -90 – 92 |
| Vent hole diameter | 3 mm | 1 – 8 |
| Vent hole count | 6 pcs | 0 – 12 |
| Bracket leg A | 40 mm | 15 – 80 |
| Bracket leg B | 30 mm | 15 – 80 |
| Bracket thickness | 3 mm | 1.5 – 6 |
| Bracket width | 30 mm | 10 – 60 |
| Bracket slot width | 6 mm | 3 – 12 |
| Bracket slot length | 12 mm | 5 – 25 |
| Bracket hole diameter | 3.4 mm | 2 – 8 |
| Exploded layout gap | 40 mm | 10 – 150 |
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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