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KB2VXA > INFO 04.05.03 19:50l 51 Lines 2258 Bytes #999 (0) @ WW
BID : 6806_WT3V
Read: DB0FHN GUEST
Subj: Re: VK3ABK > NC "memory"
Path: DB0FHN<DB0ZWI<DB0CHZ<DB0ERF<DB0SON<DB0MRW<OK0PPL<RZ6HXA<SP7MGD<WB0TAX<
KB2TXP<KB2FAF<WB2VPY<WA3LWR<W2LV<KB2VLX<KC2COJ<WT3V
Sent: 030428/1327Z @:WT3V.#CNJ.NJ.USA.NOAM #:6806 [Lakehurst] $:6806_WT3V
From: KB2VXA@WT3V.#CNJ.NJ.USA.NOAM
To : INFO@WW
Hello Dick and all,
That was an interesting, unbiased (;->) report on NiCd cells for sure.
To begin with, what would you do about cadmium spikes if the cell weren't
sealed? Do you recomend a paint scraper or a sharp kmife? What then do
you do with the metal scrapings?
Seriously, I have never experienced any memory effect with them due to
the fact that I treat them the same as commercial, industrial and
emergency service users do, I simply keep them on a constant charge when
not in use. This insures they are always "topped off" and ready to go.
Like any type of rechargable cell they are adversely affected when
allowed to self discharge on the shelf and worse when left discharged for
an extended period.
I have heard of several ways to "recover" damaged cells, but because it's
not worth the bother I wont bother with it here. (;->)
Acording to your testing method (which has a glaring fault) you had not
found any memory effect, well no wonder. If one is to take your
description as the entire test, you never actually tested for the memory
effect. You cycled the battery down to 50% but never went below that
point to see what the discharge curve looked like below that point where
a sharp drop would indicate a memory. It would have shown up in the
charge curve (100% would be unable to attain) but you didn't mention that
either.
BTW, don't bother with the factory reps and the distributors, they are
even BETTER salesmen than P. T. Barnum. (;->) Oh, take it from a tech who
worked closely with engineers, THEY only design the darn thing, the techs
make it work! Then again we techs couldn't care less how it works or why
it works, only THAT it works and stamp it "pass". Hmmmm, then again we
don't care why it failed either, only WHAT BIT failed. "Why" is for the
engineer to figure out but he usually just puts in a bigger bit.
Now you have the inside dope on engineering, manufacture and sales. Now
you have the general idea, do what we all do, buy a new one and be done
with it. (;->)
So, why did the chicken cross the road?
The transporter was on the blink and he couldn't beam there.
73 - Warren, KB2VXA @ WT3V-4
; Message timed: 09:33 on 2003-Apr-28 GMT
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