Reference Book: Star Wars Saga Edition Jedi Academy Training Manual
Before the Great Sith War, Lightsabers required significantly higher power output to maintain the stable, solid blade that makes the weapon useful both for offense and defense. As a result, Lightsabers required large power cells, some larger than a Human hand, to function at full capacity. These power cells were worn on the belt or on the back, and were connected to the hilt of the Archaic Lightsaber via a long, slender cord. Around the same time that pulse-wave weapons were phased out in favor of modern blasters, Lightsabers underwent a design revolution that miniaturized the power cells required to fuel the energy blade. With the development of this new technology, the Jedi devised methods of Lightsaber Creation that integrated these drastically smaller power cells into the hilt of the Lightsaber, eliminating the need for the external Power Pack. With this revolution, the Archaic Lightsaber design was almost entirely abandoned.
The Archaic Power Pack has one advantage over its modern analogs. The fact that the Archaic Lightsaber is physically attached to the Archaic Power Pack by a power cord means that the weapon doesn't go far, or roll away on it's own when dropped, though any kind of force applied to the power cord (Such as a Disarm attempt) immediately disconnects the Archaic Lightsaber from it's power source.
An Archaic Lightsaber requires a special Power Pack to operate (Costing 600 credits, but it lasts almost indefinitely).
Weapon Type: Lightsabers
Weight: 1 Kilogram
Type: Energy and Slashing