On Mon, 20 Aug 2001 13:34:39 -0800, Patrick White wrote:
> There's more to batteries than mAh. There's also terminal voltage
> (alkalines have a higher terminal voltage than NiCad or NiMH, Lithium?)
I believe it's
Alkaline (1.5V)
Lithium Ion (1.45)
NiMH (1.35)
NiCd (1.15-1.2V)
> there's discharge vs. voltage curves (alkaine = ramp down, NiCad = cliff,
> NiMH? Lithium?).
I believe, NiMH has a curve very similar to NiCd, with a slightly
slower dropoff at the end (shallower slope from peak to "zero"). Not
sure about Li Ion.
> For some devices, the lower internal resistance of NiCads, for example, is
> a death sentence.
In electric R/C cars, a dead shorted electrical system can draw over
100A from a 1200 mAh 9.6VDC NiCd battery pack ... for _very_ short
periods of time. The pack smokes within seconds. And I mean smokes
... outgasses all sorts of nasty smelling stuff that probably isn't
very good for you.
TTYL, DougF
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