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Originally Posted by ilovejedd
Not for the lack of trying, I'm pretty sure. If someone develops a battery that can power devices for a long period of time at reasonable cost, that someone's going to be pretty darn rich.
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I think this may not be as far off as commonly thought. Nano-tube Lithium Ion batteries are being commercialized now and promise a pretty big leap in battery size vs endurance. Since so many applications for Li-Ion batteries are possible, I think rapid commercialization is the result. I've read several good science and business articles about this and it could be as big a leap as the one from Ni-Cad batteries to Li-Ion batteries.