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.