Energy coupler/Legends
Energy couplers were technological devices with a variety of uses. Energy couplers could be used to provide power to energy containment systems, such as the cage Captain Grizzid used to transport a rancor to Tatooine. The cage, located in his light freighter's cargo hold, had energy couplers that were rigged to feed triple the amount of power to containment system.[1]
Appearances
"A Rancor Comes to Tatooine" – The Star Wars Sourcebook (First appearance)- "A Rancor Comes to Tatooine" – Star Wars Sourcebook, Second Edition