Glossary
Central Power Battery
The heart of every Corps.
The story
At the heart of Oa stands the Central Power Battery — a colossal green lantern, forged by the Guardians billions of years ago, that stores the green light of willpower for the entire Corps. The Corps’ standard rings and personal batteries draw on this system. It is the most important object in the universe, and the most heavily guarded: the entire Green Lantern Corps exists, in a sense, to protect the thing that gives it life.
But the Battery held a secret. Sealed within its core was Parallax, the living embodiment of fear — imprisoned by the Guardians so long ago that even most Guardians forgot. Its presence tainted the green light with the yellow impurity: for eons, no Green Lantern's ring could directly affect anything yellow. In Emerald Twilight (Green Lantern vol. 3 #50, 1994), Hal Jordan — already infected by Parallax's influence — destroyed the Central Battery and absorbed its power, becoming Parallax himself. Oa fell silent; the Corps was unmade.
The Battery was rebuilt, as Oa was rebuilt, and the truth of the impurity was finally exposed in Green Lantern: Rebirth (2004–05). The story shows that Lanterns can overcome the impurity through willpower. The rebuilt Battery remains the Corps’ main supply of green light. Read about the great wars fought over it in the Events section.
Artwork: DC Comics — fan tribute.