This mode is created based on a motor housing I found on Maker World but the design of the 18v battery box, and lids are all original. The main idea was to create a portable power source for my V-Spooler but also thought the design could be used wherever a step down 18v power supply with adjustable power to a motor could be needed. 

Parts Purchased

Motor

Bringsmart Micro Reduction Motor DC 12V 300rpm Geared Motor with Bracket Centric Ouput Shaft Gear Motor 37mm Diameter Gearbox Large Torque - Amazon.com

Motor Control Board

Amazon.com : Exqutoo 2Pack PWM Speed Controller Adjustable Driver Switch Low Voltage DC Motor Speed Controller with Speed Control Knob 1.8v 3v 5v 6v 12v 2A 30W : Tools & Home Improvement

18v Step down and Milwaukee Adapter

https://www.amazon.com/gp/product/B0BGPGPHQQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Ridgid Adapter

Amazon.com: Power Wheel Adapter for Ridgid AEG 18V Hyper Lithium Battery Adapter with Fuse & Wire Terminal,14 Gauge Wire Power Convertor for DIY RC Trucks, RC Toys, Robotics, Work Lights : Tools & Home Improvement

Ryobi Adapter 

https://www.amazon.com/gp/product/B0BVGM5BF4/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1

Long Power Cord 

Amazon.com: CERRXIAN DC5521 Power Pigtails Cable,3.2FT 14AWG 5.5mm x 2.1 mm DC Male Bare Wire Open End Power Wire,DC Supply Repair Cable for CCTV Security Camera LED Strip Light Etc(2-Pack) (1m Black) : Electronics