Best 3D Printed Large 18650 Battery Power Bank and Charger for Under $80

Whether you’re traveling across the country or just across town, you’re bound to find yourself in a situation where wall outlets aren’t available when you desperately need to juice up your laptop or smartphone. To help ensure that all your devices have enough power until you get to your destination. You’ll find a range of options, including all-in-one powerhouses like the Omnicharge, MagSafe battery packs that pop right onto the back of your iPhone.

In this project we built a 300w 3D Printed Li-Ion Battery power Bank. Below is our objective for the project. 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.

More information about this project can be found here:

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

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.