The B3-A ultra battle droid was a powerful and deadly modification of the B3 battle droid designed by the Confederacy of Independent Systems. The B3-A was outfitted with heuristic processors, allowing them an increased degree of intelligence and independence. B3-A units were physically identical to B3 units, but possessed far more sophisticated programming and knowledge of tactics. Due to the inclusion of a secondary battery, B3-A units had a long range, and were often sent on commando raids to remote planets, operating in teams numbering anywhere from five to twenty.