Ambulatory batteries,
power droids are among the least sophisticated and most commonly encountered droids in the galaxy. The boxy robot is essentially a walking battery, moving about on two thick, accordion-like legs. Power droids provide energy to other droids, machinery, vehicles and starships. They are found in military installations, such as the
Death Star and
Rebel Alliance hangar bays, as well as civilian outposts like the moisture farms on
Tatooine.