At 14:14 11/23/02, you wrote:
OK, thanks everybody. One last question. What is the difference between
the 357 and the SR44 ? They are
both Silver Oxides.
-Tim
They are similar, but designed to different standards for nominal and peak
current demands. ANSI specifications for the various silver oxide cells:
1107SOP:
Energizer EPX76
1131SO:
Duracell D303 and D357 watch cells
Energizer 357 (303 shows "N/A" for Ansi standard [??])
1184SO:
Duracell MS76 photo cell
Silver Oxide cell technical information:
Duracell:
http://www.duracell.com/oem/Pdf/others/silver.pdf
Energizer:
http://data.energizer.com/datasheets/library/primary/silver/303.pdf
http://data.energizer.com/datasheets/library/primary/silver/357.pdf
http://data.energizer.com/datasheets/library/primary/silver/epx76.pdf
Compare these data sheets to the ones for alkalines and 3V lithiums:
Duracell:
http://www.duracell.com/oem/Pdf/dl13n.pdf
Energizer:
http://data.energizer.com/datasheets/library/primary/manganese_dioxide/a76.pdf
http://data.energizer.com/datasheets/library/primary/lithium/2l76.pdf
Couldn't find on-line data sheets for the rest.
The 357 watch cells can withstand short periods of high demand combined
with continuous very low drain. For the OM system, it's a better match to
operation of an OM-2S (thanks to Chuck for reminding me about this body)
and the OM-4[T] than the "photo" version. Energizer's alkaline drops below
1.3 volts at 1/3rd of its total life! Silver oxide cells don't do this
until very nearly end of life.
-- John
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