HOS-W048 commercial treadmill the unpowered treadmill, also known as a manual treadmill, is a fitness equipment that operates without the use of electricity. Unlike traditional treadmills, which require a constant power supply to function, unpowered treadmills rely on the user's movement to power the belt. The belt moves as the user walks, jogs, or runs, providing a similar workout experience to a powered treadmill.