B1 battle droid dispenser
From Wookieepedia, the Star Wars wiki.
The B1 battle droid dispenser was a roughly cylindrical box made of durasteel used by the Confederacy of Independent Systems during the Clone Wars to continually dispense a supply of B1 battle droids, from four circular hatches mounted at equidistant points around the dispenser. The droids were stored in deactivated, folded position, much like in the MTT, but it is unknown exactly how many droids the dispensers contained. Clone Commando team Delta Squad encountered many of these units during their various operations.
[edit] Behind the scenes
In game, the droid dispensers will continue deploying droids until the dispenser itself is destroyed, it is not clear whether this is simply game mechanics or if the dispensers did indeed somehow have an unlimited supply of droids.
