> Looking for a battery operated water pump, very small flow 
> volume, in the range of a trickle.  Anyone come across 
> something like this?  Maybe something like used in model 
> railroads or the like to emulate a stream or waterfall.


Or to water plants with power from a small solar cell?

http://www.xs4all.nl/~sbolt/e-groeneVinger_Duim.html 

"The pump (green cylinder with white top) is a type used to tank model
aircraft. The original motor was intended for 12V, making solar power
difficult to arrange. An old toothbrush motor is much better for our
purpose, as it needs only 2.4V."

Please do let me know if you find anything good as I am interested as well.

I would assume a diaphragm type pump would be the most efficient and driving
it from a high efficiency motor or solenoid would give the best bang for the
buck, but I am not a real engineer, I only play one on the net.

---
James.
 

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