The Empulse R20 power-assist device is designed to support attendant pushing of wheelchairs—uphill, downhill, or on long trips—without affecting manual self-propulsion. The R20 is foldable and lightweight (around 4.5kg only), making it easy to transport either attached to or detached from the wheelchair. It is compatible with most folding and tilt-in-space manual wheelchairs, supporting users up to 375 lbs (419 lbs including the wheelchair). The device offers a 15km range and can climb slopes up to 10°. Features include fast, tool-free docking, three speed settings, one-button operation, and an adjustable control unit. Its free-run mode allows independent propulsion without detaching the device. Suitable for wheelchair frames with tubing diameters of 22–28 mm