On Oct 23, 2:40 pm, "Joel Koltner"
wrote:
Not to put too much of a damper on this, but I've looked into it and it's
clear that there's no trivial "off the shelf" solution that you can point to
and claim your million dollars. :-) This prize isn't going to be won by
someone tinkering in their basement -- it'll end up going to, e.g., some
researchers at a university with good connections to industry.

Putting 2KWH of controlled energy into a 10# package is going to be a
real trick... Not doable with todays electrical containers - no matter
how fast that damn rabbit beats the drum...
Off the top of my head (along with flies, fleas, and dandruff) I
predict it will not be a rechargeable battery...
It will either be a version of a fuel cell with compressed hydrogen as
the fuel..
Or it will be a version of a primary battery with an erodeable anode -
for example an Fe-Cu cell with vinegar electrolyte, but likely using
lighter metals - Lithium comes to mind, of course...
When I first read this I made a mental note to look up and calculate
how many gms of copper would have to be sacrificed in an Fe-Cu cell to
generate 2KWH, but life intervened and I haven't gotten back to that
(and likely won't) so I throw it out for thinking by those with a bit
of chemistry background...

denny / k8do