The Heavy Battle Droid represented an enhanced iteration of the B1-series battle droid, distinguished by its superior armor plating compared to the standard version. Equipped with significantly larger and more potent blasters than the standard B1's E-5 blaster rifles, these droids also featured enlarged "backpacks". They saw deployment by the Trade Federation Droid Army during the Invasion of Naboo conflict.
Star Wars: Galactic Battlegrounds, a video game, includes the Heavy Battle Droid as a unit.