Dmitry Gromov wrote:
Hi!
On Mon, Jun 11, 2012 at 11:11 AM, P. J. Alling
<[email protected]> wrote:
Sorry, I can't seem to keep my chemistries straight. I have used the CR1
form factor cells because they were more convenient. They work fine. They
still didn't seem to last as long just stiiting as the silver oxides, they
seem to have a faster self discharge rate.
Ok, great, thank you for the confirmation! They are convenient, I
agree, but they seems to be more expensive than silver oxide...
Back when pretty much every camera used button cells and a lot of
cameras started using two due to the increased power drain from
everything becoming electrically controlled, they were pretty much on
par as far as price goes. Now they're a specialty item.
LR44/S76 etc. are still used in hearing aids among other things so
there's still a fairly large demand which leads to a large supply, and
the rules of economics take over.
I started using only the silver oxide cells when my original HP-42s
died, (it used PX13 mercury cells), and HP replaced it with an upgrade
that used 1.5 volt button cells. After a replacing the LR44's twice in
a year, I tried the S-76 and replace them once every, two or three
years. I have a pocket digital multimeter that runs on them too. As
long as I remember to turn it off between uses they seem to last forever.
As an asside nothing seems to
beat murcury cells for longevity in occasional use. I've tog one in a
Spotmatic F that must be over 30 years old that still powered the meter last
time I checked.
Wow, that's impressive. Sad, they don't make those anymore as far as I know.
Dmitry
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