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Re: [OM] Batteries: Silver vs. Lithium

Subject: Re: [OM] Batteries: Silver vs. Lithium
From: Richard Schätzl <Richard.Schaetzl@xxxxxxxxxxxxxxxxxxxx>
Date: Tue, 06 Jan 1998 22:21:08 +0100
In the Duracell pamphlet I found further information about size
compatible silver oxid button cells, which might be of interest for the
FAQ and recent discusion:

Duracell
Product                                                         IEC     ANSI
Number          Drain mA        Capacity mAh    Load Ohms       Type    Type

D301/386        0.10            120             15,000          SR43    1133S0
D303/357        1.50            165              1,000          SR44    1131S0
D381/391        0.10             40             15,000          SR55    1160S0
D389/390        0.11             70             13,000          SR54    1138S0
MS76            1.00            180              1,500          SR44    1184S0

For all types:
Nominal Voltage 1.55V, Rated Voltage Cutoff 1.2

Source: Duracel PDF files Date 2/97

To me it seems, that there are only two relevant cell typs: The MS76 and
D303/357.
The D303/357 has a smaller capacity and higher internal drain caused by
smaller internal resistance. The smaller internal resistance might help
to supply the OM more easyly with current, so in case a OM-2SP needs
much amps the voltage might not drop to much. This migth help to operate
sensible OM bodys, like the OM-2SP should be, more reliable.
But you have to change the batteries more often, because of the higher
drain and lower capacity of the cells.

The MS76 will live longer and let your OM body eat less batteries,
because of lower drain and higher capacity. 

Richard

In the Olympus FAQ maintained by R. Lee Hawkins, is folowing writen
about OM body batteries:

B3) My OM-{PC, 2S, 4(T)} eats batteries.  What can I do about it?

        Several things:

        1) Use SR44 (#357) silver oxide batteries.  SR44P (MS76),
recommended
        by many camera dealers and some battery manufacturers, has a
higher
        internal resistance and is not quite as good.  Alkalines (LR44,
MS76A)
        are to be used only if nothing better is available.
snip..

 (Thanks to Brian Waldron for data).

        Thanks to Michael A. Covington <mcovingt@xxxxxxxxxx> and
                  Dan Lau <dlau@xxxxxxxxxxxxxxxx>

Further the battery table:

B1) What types and number of batteries do the various bodies take?  Is
        one type better than another?

        Here is a handy cross-reference of battery types:

        ANSI Spec.  1131SO    1107SOP   1166A     1124MP
        IEC Spec.   SR44      SR44      LR44      MR9
        Chemistry   AgO       AgO       Alk.      Mercury

        Bulova      228
        Duracell    D357      MS76      PX76A     PX625
        Eveready    357       EPX76     A76       EPX625
        Kodak       KS76      KA76      KX625
        Maxell      SR44W     SR44P     LR44P
        Panasonic   SP357     G13       LR44      H-D
        Rayovac     357       RS76      LR44      RPX625
        Renata      357
        Seiko       SR44W
        Timex       J
        Toshiba     SR44W     SR44      LR44      MR9
        Varta       V357      V76PX     V13GA     V625PX

        Thanks to "Larry J. Clark" <ljclark@xxxxxxxxxxxxx> and
                  Kerry Frohling <kdfrohling@xxxxxxxxxxxx>


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