"From: [EMAIL PROTECTED]
 
 "Urban legend....AA's are AA's, they are all 1.5v and
that is all your camera, 
 or anything else using that battery, cares about.  Power
usage is determined 
 by the device, not by the battery as it will deliver
only what the device 
 requires..no more.  Where batteries differ is in amp
hours which is a measure 
 of how long they will deliver their voltage.

 Jerry in Houston"

This is not entirely true. Circuits that "charge up" may
have a very low initial impedance, so the rate they
charge is determined by the current sourcing capability
of the battery. Batteries which can deliver more current,
charge faster, and possibly overheat components. 
If one were to measure the battery voltage, under a heavy
load  (10 ohm resistor), a Nicad, NiMH and lithium would
measure higher than an alkaline. This is why flashes
recycle faster with Nicads/NiMH/Lithiums than alkalines.
-
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