12V 18650 Battery Pack Enclosure
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DIY 12V 3S3P 18650 Battery Pack Enclosure
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
DIY 12V 3S3P 18650 Battery Pack Enclosure
This is my custom-designed 3D printable enclosure for a DIY lithium-ion battery pack, built using nine 18650 cells in a 3S3P configuration.
The goal was to create a clean, professional-looking battery enclosure with practical features and separately printed decorative panels.
Features
* 9 × 18650 battery cells (3S3P)
* 3S BMS protection board
* 2 × DC output ports
* 5V USB-A output
* USB-C battery charging input
* Battery level indicator
* Main ON/OFF switch
* Separate decorative panels with detailed lettering
Printing Instructions
Print Profile 1: Battery Case
* 0.4mm nozzle
* Includes the main enclosure components
Print Profile 2: Detail Panels
* 0.2mm nozzle
* Designed for sharper lettering and finer details
Both print profiles are required to complete the enclosure as designed.
The enclosure was designed in Fusion 360 and printed using a Bambu Lab A1.
Please check the dimensions of your electronic components before printing, as different modules and connectors may vary in size.
Important Safety Notes
This is a 3D printed enclosure, not a certified battery product.
The nominal battery voltage is 11.1V, reaching 12.6V when fully charged. The DC outputs are not regulated to a constant 12V.
Use appropriate battery protection, insulation, charging circuitry, and electrical safety precautions. Battery pack assembly should only be performed by people familiar with lithium-ion battery safety.
About This Project
I created this design for my YouTube channel, JABALI, where I build and test electronics and DIY projects.
I decided to share the files so others can print, learn from, and improve the design.
You can find the full build video on my YouTube channel:
Electronic component links
1- https://share.temu.com/XoV2BP5gS0B
2- https://share.temu.com/jpkbFgnTTIB
3- https://share.temu.com/aKDWCxdUNHB
4- https://share.temu.com/PO4gcoiPJOB
5- https://share.temu.com/2Eog2zNvclB
6- https://share.temu.com/gBGhS6QQ6dB
7- https://share.temu.com/EVXqOy8Bx0B
8- https://share.temu.com/5mkueNSa2rB
JABALI
Happy printing!