Energy cell (vibroblade)

Energy cells (also called Energy Projectors) could be equipped to certain melee weapons, allowing the weapon to inflict energy based damage in addition to slashing damage.

This made the weapon more powerful and more versatile. The best energy cells (Mark III & IV) could provide extremely high energy damage that rivaled the amount dealt by a lightsaber, in addition to the slashing damage, making a vibro weapon with an energy cell incredibly deadly. The weapon was also powerful enough to penetrate beskar with the Mark IV addition: Enhancing the deadliness of the weapon. This energy could take up a number of forms, the Mark IV Energy Cell produced a sheath of lightning on the blade, which could be turned on and off at will.

Text and facts from the “Energy cell (vibroblade)” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.