>Alkaline button cells work, but they are not ideal.  I also tried small
>lithium cells, mercury batteries and zinc air cells.  None of these provided
>much current.
>
>The caps have solder leads, this is a strong advantage.  My test flights
>typically end violently.  If I use batteries, I need a good mechanical
>structure for the battery holder.  Battery holders weigh quite a bit.
>
The new lithium-ion and lithium-polymer batteries are supposed to provide a
considerable size/weight advantage. Also, they are flat.

I think your concept is wonderful. I'd like to hear more about it as you
make progress.

Regards,
Reg

.....................Reg Neale.....................
"Ignorance is a renewable resource"   P.J. O'Rourke