Meet the Ronin Lift: a battery powered rope ascender with 400lbs lifting capacity that lets you conquer new heights. Whether you want to trim a tree or climb a rock, the Ronin Lift can help. It weighs less than 20 lbs with a large battery and has a rugged design. You can adjust lifting speed up to 2ft/sec.
You can use the device with any 9mm-11mm static rope. It acts as an ascender as well as a winch. The battery pack is hot swappable.