Vortex cannons use controlled gravitic shear planes to cause a target to simply fall apart into component fragments. The cannons are silent in operation, but so heavy and complex that they can only be mounted on gravtanks and other similar dedicated fighting vehicles.
Some weapons are simply too big to be comfortably used without a tripod, fixed support, or vehicle mounting. Others require specialized training in the use of heavy munitions.
Energy weapons use Type B power cells.