Refresh droids were air-mobile support droids used by the Confederacy of Independent Systems on battlefields during the Clone Wars. In the latter stages of the conflict, they were partnered with IG-227 Hailfire-class droid tanks to replenish their warhead launchers. They were produced by Haor Chall Engineering. Refresh droids were manufactured after the InterGalactic Banking Clan retired the Hailfires from the battlefield due to their limited supply of thirty rocket warheads at a time. With the production of refresh droids, Hailfires once again saw action.