I've been asked the question, "if this is the end, or nearly the end of the age, what should I do?" Well preparing makes sense. I would make sure I'm spiritually prepared first. (John 17:3) To know the Lord should be the first priority on anyone's list. But making physical preparations (JIC - just in case) makes sense too. And this video is a way you can make your own long lasting personal battery cell. Good stuff.
The complete build process for crystal power cells. 15V version coming up next.
Parts list and more information listed at: http://laserhacker.com/?p=326
Live video duration test: http://laserhacker.com/?page_id=20
