William Sommerwerck wrote:
>
> > The instruction sheet with my new (to me) T18 indicates that
> > NiCd batteries should not be used... How about NiMH? And,
> > by the way, why NOT NiCds? Is it the lower voltage, too much
> > current? I'm pretty happy with NiMHs in my T32 and T20...
>
> It might be that the voltage is too low, but this is unlikely, as most
> battery-operated devices are designed to work down to about 1 volt per cell.
>
> The most-likely explanation is that the source impedance of NiCd cells is
> "too low" and the flash will draw too much current, possibly overheating.
> NiMH cells have an even lower impedance, so this "goes double" for them.
>
>
Yes, the problem is due to low internal resistance of the Ni-cd, BTW I
think both Ni-cd and Ni-MH has similar internal resistance, the Ni-MH
has higher current capacity though.
C.H.Ling
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