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Best 3D Printed 18650 Battery Power Bank under $80

In this project we built a 300w 15 cells 18650 Li-Ion Battery 3D Printed power Bank.

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Description

In this project we built a 300w 3D Printed Li-Ion Battery power Bank. Our goal for the project is to be able to 3d print a power bank with ac outlets that is easy to build and assemble. Below is our objective for the project.

Details

Project Objective

3D Printed under 24 hours with only 7 parts
Must be easy to build and use
Must be easy for kids to learn
Fully customizable with different power usage
Must be practical and reliable

Files

Battery Holder Top Cap.stl Standard Tesselated Geometry - 639.93 kB - 01/16/2022 at 00:51		Download
Battery Holder base part.stl Standard Tesselated Geometry - 683.19 kB - 01/16/2022 at 00:51		Download
Outer sleeve.stl Standard Tesselated Geometry - 250.77 kB - 01/16/2022 at 00:51		Download
Top Cap.stl Standard Tesselated Geometry - 232.11 kB - 01/16/2022 at 00:51		Download
Bottom Cap.stl Standard Tesselated Geometry - 112.97 kB - 01/16/2022 at 00:51		Download

View all 7 files

Build Instructions

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1

Parts Needed, Tools and Schematic

Parts Needed

-3D Printed Part

-Lithium-Ion Battery Cells (15pc)

-BESTEK 300W Car Power Inverter (Red)

-DZS Elec 2PCS LM2596 DC-DC Step Down Variable Volt Regulator Input 3.2V-40V Output 1.25V-35V

-3S 11.1V 12.6V 25A W/Balance 18650 Li ion Lithium Battery PCB Protection Board

-45W Ac Adapter/Laptop Charger for HP Chromebook 11

-DC Power Jack Socket Threaded Female Panel Mount Connector Adapter with Dustproof Plug

-Nilight 90013L Round Toggle LED Switch 12V

- DC 12V 24V 36V 48V 72V Battery Meter with Alarm, Battery Capacity Voltage Indicator

-XT60 Connectors Male & Female Plug

Tools

-FDM 3D Printer with minimum height of 150mm

-Enhanced Rechargeable Portable Spot Welder Machine 6 Gear Adjustable Mini Small Battery Spot Welder

-Digital Multimeter

-Soldering Iron Kit with heat gun

Schematics & Build

The assembly is simple and straight forward. The battery cells used in this project are NCR18650BE Panasonic with a 3.6v and 3.2ah. The Inverter comes with 2 usb ports, 2 ac outlets, and a fan. The li-ion battery cells and the bms have a 3D printed compartment that makes the pack easy to build.

View all instructions

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