[Power] Power solutions for charging 150+ XOs1.0/1.5

[Richard Smith]

> Not to be cynical but I would not hold your breath.  Various people
> have sent me articles about this and none of them actually say what
> this magic is.

So I finally found some details.

http://www.usc.edu/CSSF/Current/Projects/S0912.pdf

Basically she claims to have found material useful in making better
supercapacitors.  However, its still a long ways off.  The energy
density is 20Wh/kg.  As a comparison the energy density of the LiPO4
battery in the XO over 102 Wh/kg.  I say over because my weight
measurement includes the _entire_ battery, plastics, metal case around
the battery, electronics and connector.

While her finding seems to be a step in the right direction its not
going to supplant the battery in your cell phone anytime soon.  Its
slowly getting closer though.

--
Richard A. Smith
One Laptop per Child