Since batteries are subject to all kinds of harsh loads, inductive and capacitive
too, I don't see why putting them under a textbook load would be desirable as long
as the load was consistent with all tests. Wirewound nichrome wire resistors will
stand up to harsh treatment.
Rick

Eric Christensen wrote:

> I am building a battery testing device that will run long-term (1-2 year)
> tests on different types of batteries.  This device has a few resistors in the
> battery discharge part of the circuit that I would like to be as 'ideal' as
> possible.  The resistors will see currents from 5 amps (the low ohm ones) to a
> single uA (the high ohm ones).
>
> Does anybody have any info about the various types of resistors.  I need to
> know things such as the capacitance, inductance, etc... as well as the
> stability over time.
>
> I have heard that carbon resistors absorb moisture and will change value over
> time.  I have heard that wirewound resistors have a high inductance.  By the
> name, I would guess that thick-film resistors have a high capacitance.  But...
> I don't know the facts or have any data to back up these general notions that
> I have.
>
> I have read a few resistor datasheets, but have yet to see one that lists
> these parameters.
>
> Thanks in advance,
> Eric
>
> --

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