P3D Re: Ni-cad Batteries

[Rob <lilindn@xxxxxxxxxxx>]

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     I have heard many times before that Ni-Cads are not recommended in
many circuits (not just cameras or motors) because of their relative
lack of internal resistance and the design of some circuits that rely on
the internal resistance of cells (Alkaline, Zinc Chloride of Carbon
Zinc) for protection.  An Ni-Cd battery back from a ham radio handie
talkie can start a fire if anything shorts the conductors!
     Does anyone out there know what the internal resistances are for
the different sizes of alkalines?   What about using Ni-Cd batteries,
but placing a low resistor in series with the circuit?
     Rob


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