Now, Green Lanterns are not known for being the brightest crayon in the box. Hal Jordan has a long history of acting brashly and stupidly, like in the recent issue of Blackest Night where he decided that the safety of his former lover Carol Ferris was more important than that of the whole Earth, among many other things. Guy Gardner has the tendency to antagonize everyone, including Batman who one-punched him that one time. John Stewart caused a whole planet to die because he was being cocky. So when I saw the death of Kyle Rayner, all I could think of was "What a dumbass!".
Eventually the battery does explode, taking out (seemingly) every Black Lantern that was in Oa, and also kills Kyle, who was at the center of the explosion. Before his death, he says goodbye to Soranik and Guy, in a very heartfelt scene.
Which is all well and good, until you realize one thing: did Kyle completely forget he has a freaking magic ring that can do anything he wishes?
And to make matters worse, he created a dome which stopped the Black Lanterns from escaping, but he completely forgot to raise a protective shell of his own? You figure that would be one of the things at the top of the "To-Do" list when you are carrying a bomb in your arms and being attacked from all sides by unstoppable killing machines.