a wrote:
Where do I send a check to get 24 hours without a recharge on my
laptop?

There was (probably still is) work being done on tiny turbines
constructed using MEMS technologies that would be small enough to
replace batteries in laptops and other electronic devices and provide
power 10 times longer than batteries. The irony is that their advantage
is due to the much larger energy density of liquid fuels. Some links:

http://robots.net/article/2650.html
http://www.gizmag.com/go/6245/
http://www.ece.umd.edu/MEMS/projects..._June_2008.pdf
http://en.wikipedia.org/wiki/Microel...anical_systems