Entechment rig Entechment rigs were devices used for the Ssi - ruu k process of entechment , in which an individual ' s life energies were drained to supply energy for powering various technological devices used by the reptilian aliens . Description . A subject was strapped into an entechment chair , where a catchment arc was positioned . Prior to entechment , a magnetic solution , known as magsol , was injected into the subject ' s carotid artery . The catchment arc then applied a powerful magnetic field which charged the magsol and drained the subject ' s life energy , causing grievous pain to the subject and eventually killing him or her . The Ssi - ruuk used the captured life energy to power Ssi - ruuvi ion paddle beamer s , battle droids and other technological devices . Because of the misery of their occupants , entechment rigs were surrounded by slight concentrations of the dark side of the Force . History . The Ssi - ruuk developed this technology for use on a slave species known as P ' w ' eck s . When the Ssi - ruuk came into contact with the galaxy , they discovered that Humans were a far more powerful source of energy than the P ' w ' eck . However , an echo of the Human ' s memory accompanied the electricity into the catchment arc . This echo perceived itself as alive and often suffered from psychosis caused by the entechment process , thus reducing the life energy ' s sustainable period to a few days . The Ssi - ruuk claimed that the entechment process was painless , although subjects always screamed as if in severe agony when hooked up to the entechment rigs . The Ssi - ruuk employed the Force - sensitive Human Dev Sibwarra to calm those being enteched , although they told even him that it was a painless process , even promising that he would someday be " allowed " to be enteched . This helped in the entechment process , since the life energies did not degenerate too rapidly . During the Invasion of Bakura in 4 ABY , Dev sensed the arrival of Luke Skywalker through the Force and surmised that his Jedi powers would allow him to entech subjects from far away . After the Ssi - ruuk agreed with the project , they arranged for a special reclining entechment bed to be built . This was equipped with locking arms , leg bands and twin tubes which would pump both magsol and nutrients into the individual ' s bloodsteam , pacifying his nervous system for the bed ' s catchment circuits . This nutrient flow allowed the Ssi - ruuk to leave the subject on the entechment bed for several days . The upper spine beamer could also numb the person from thirty - five minutes to two hours to counter resistance . The reptilian aliens also developed a mind - control drug that would force a Jedi against their will to entech subjects in a process that was excruciatingly painful for both the captive Jedi and the entechment subjects . This bed was first tested on Dev , who enteched a subject a few meters away from him . The Ssi - ruuk believed that Luke Skywalker ' s Jedi powers would allow him to entech subjects even thousands of kilometers away . They managed to capture him and attempted to prepare for their project . However , Dev overcame his indoctrination and then freed Skywalker . They then defeated the Ssi - ruuk on the ship " Shriwirr " and forced them to flee .