RussellMc wrote:
> If doing capacity testing then say 4C at 25% duty cycle may produce a
> different result to 1c at 100%.

This brings up a interesting point I have so far been unable to find
adquately addressed in battery datasheets.  At what frequency does the 4C a=
t
25% duty cycle effectively look like steady 1C?

This is not just a academic question.  If you are building a battery charge=
r
or maintainer and want to use effecient electronics, they are going to be
pulse switched.  You could put enough inductance in series to smooth out th=
e
average current, but these currents can be substantial and the inductors
therefore expensive.  Therefore knowing what frequencies the battery can
"see" would be useful.  If you pulse it at a frequency above what it can
see, then no series inductor should be needed.

Last time I built a device like that the volume was small so I put the
inductor in to guarantee the specs were met, but it seems to me it should b=
e
unnecessary if done right.


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