A GNK power droid powering equipment
Droids designed for power supply, also known as power droids, were relatively simple droids that functioned as mobile energy sources to provide charge to vehicles and various types of machinery. They came equipped with a compact, self-contained power generator along with several ports for connecting devices.
Despite their crucial role in both military and civilian sectors, power droids were such a common sight throughout the galaxy that they frequently went unnoticed by the general population. Two well-known power droid models were the GNK-series, manufactured by Industrial Automaton, and the EG-series droid, produced by Veril Line Systems. Because of the quiet, honking sounds they emitted, both were generally called "gonks". Another notable power droid was the PLNK-series power droid that carried tibanna gas; PLNK-series droids earned the nickname "plunk droids" due to their unique honking sound.
Besides the EG-series, Veril Line also created the smaller EGL power droid as well as the ECG-series power droid. Other, less common power droid models included the MPH power droid, which the Pyke Syndicate used to power equipment within the Kessel spice mines, the KT power droid employed on Jakku, and the uniquely modified unit known as WG-22.