Russell McMahon wrote:

> Diversion:
> Q.:     Zinc Air cells have superb energy densities - about twice that
> of Alkaline.  Good for spacecraft?
> A        :-(  - No

  Of course not.  Mainly because that statement is not *actually* true.
They don't *really* have a good energy density.  It's a(n obvious sort
of) trick!
--
  Cheers,
        Paul B.