Diatium power cell

The Diatium power cell, also known as the lightsaber energy core, was the primary power source for a lightsaber and one of the critical components of a lightsaber hilt. Located directly below and wired into the primary crystal mount, to which was affixed the weapon's primary focusing crystal, these types of power cells were in turn wrapped within the power field conductor, power vortex ring and an inert power insulator. The lightsaber's pommel cap and its recharging port were attached directly to the diatum cell.

Text and facts from the “Diatium power cell/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.