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Artist: Ilya Truhanov.
DC 12V 80RPM Worm Gear Motor.
Digital Low Voltage Protector Disconnect Switch Over Discharge Protection Module for 12-36V.
DC Motor Speed Controller 10V-55V 12V 24V 36V 40A, with Forward-Brake-Reverse Switch, Ajustable Potentiometer & Digital Display.
Lithium ion power device packs are a great source of power, this is exactly how I safeguard my own from over-discharge so I can utilize them for all kind of tasks.