Peter Tiang wrote:
>
> > I monitor chging V & T - The batteries tracked the voltage
> > droop per the data sheet closely at first, but the effect
> > disappeared early on.
> >
> > I was never able to observe the described temp behaviour.
>
>     That's weird, did you observe the temp close
>     to the cell or outside the battery pack ?

Thermocouple probe of a Wavetek 28XT taped to a cell.

> > What is very noticeable is the rate at which V_chg increases
> > with increasing ambient T.
>
>     If I remembered correctly, you should be
>     monitoring the pack voltage when the current
>     source is removed.
>
>     This will take care of the voltage drop due to
>     charging current which will vary with cell
>     impedance (which is a function of T).
>
>     Incidentally, this method of "pulsed" constant
>     current charge is better at preventing dendrites
>     formation in the battery cells.

Checked the data sheet, no mention of measurement protocol.
I bet you're right. I'll give it a try, thanks.

regards, Jack

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