Very nice analogy.
There is a difference that isn't too meaningful most of the time.
Since the batteries are wired in serias, the same number of electrons
pass through each battery. If one battery has more power than the
other it can continue to force electrons through the other battery
even after the other battery is completely drained. A camera is
probably intelligent enough to shut down when the voltage drops too
low (one battery is completely discharged). Some items, a flash light
for instance, provide a current path until they are switched off. If
you forget to turn it off you are probably guaranteed of destroying
the weaker battery.
-jeff
On 5/17/07, Ian Manners <oice500@xxxxxxxxxx> wrote:
>
> Hi Chuck
>
> > Negative charge????
>
>
> Think of the two batteries as two cylinders of water with
> flexible membranes on top of the cylinders, one has 2.4L
> and the other has 2.5L in it, both are drained through tubes
> at the base of the cylinders to a shared reserve of liquid by
> applying pressure to the membranes at the top but only for
> the same length of time until one is empty (ie, enclosed system
> as the batteries would be). The 2.5L cylinder will of cause have
> water left in it. Again using the same resouvhose on each, same
> water pressure, same amount of time each, fill both cylinders.
> Wont be long until the difference in the amount of water in each
> cylinder is vastly different, or one overflows.
>
> Now, if you push it to empty both cylinders of water completely
> in an attempt to balance them, you run the risk of breaking
> the membrane on the 2.4L cylinder as it needs to go into
> negative pressure to keep up with the 2.5L cylinder.
>
>
> Cheers
> Ian Manners
> http://www.comkal.net/
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