The last I had heard, it sounds like a good idea, but just one of the batteries would not be powerful enough to power but just a few things for a short period of time. But they would however be able to be linked into others in a row to make one large battery. But then the costs go up also. I think they are on the tight track, and soon there will be a true breakthrough in battery technology that will be the true saving grace to the world. They are very close, just not quite there yet.