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[OM] Re: Batteries again, again... was Question about OM-4 spot meter

Subject: [OM] Re: Batteries again, again... was Question about OM-4 spot meter
From: "Ali Shah" <farali@xxxxxxxxxxxx>
Date: Wed, 22 Sep 2004 09:27:03 -0400
An Energizer 357 Silver Oxide is right on their website. Radio Shack carries 
them in the stores and online @ www.radioshack.com.

- Ali


----- Original Message ----- 
From: "John A. Lind" <jlind@xxxxxxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Wednesday, September 22, 2004 12:44 AM
Subject: [OM] Re: Batteries again, again... was Question about OM-4 spot 
meter


>I need to go back and look at Energizer's data sheets again . . . I must
> have found an old "357" when I first looked after finding the 357/303
> Energizer started selling a while back.  OTOH, I've been using those
> Energizers without notable issues . . . but admittedly haven't kept data 
> on
> them . . . just anecdotal that I don't seem to be replacing them any 
> faster
> than their predecessors.  Your remarks wouldn't surprise me much . . . a
> cost-cutting measure by Energizer . . . they eliminated a fair number of
> cell numbers from their product line at about the same time the 303/357
> showed up.  If you think about it, it's not in the battery manufacturer's
> interest to sell extremely long-life "throw-away" cells . . . other than
> maintaining sufficient life that that the public doesn't get upset about
> them pooping out too quickly.
>
> [Gratuitous Cynical Rant]
> For-profit corporations don't want you to repair anything and they promote
> (a) non-repairable "throw-away", (b) "subscription" based, and (c) new
> accessories "frequently required" product lines . . . as often as the bulk
> of consumers will tolerate.  This is straight from MBA 501 . . . these
> methods, if accepted by the consumer, are revenue generating cash cows. 
> In
> the abstract, it's the same business model the drug pushers use.
>
> That said, I don't risk a wedding shoot with weak cells in an OM-2S . . . 
> I
> don't do more than two without replacing the cells in it with new ones . .
> . and keep the ones that were in it (still good) in reserve for the OM-4
> that I don't use for paid gigs and can afford the risk.
>
> Thanks,
> -- John Lind
>
> At 09:49 PM 9/21/04, Moose wrote:
>>Well, what can I say? I hate to disagree with you, John, but.....
>>
>>If you go back in the archives, you will find epistles from me and
>>others about all these similar batteries. The issue here is low vs. high
>>drain designs. In my 3/26 post, I address this specific issue:
>>--------------------------------------------------------------------
>>"Looking at the data sheets, the 303 is the same size as the 357.
>>However, the 303 is "Designed for use on continuous low drain" while the
>>357 is "Designed for use on continuous low drain. High pulse on demand"
>>
>>You can really see the difference in the spec for internal resistance:
>>303 - Closed circuit voltage no less than 0.95 volts on a load of 100
>>ohms at 21C for 0.1 to 2.0 seconds.
>>357 - Closed circuit voltage no less than 1.30 volts on a load of 100
>>ohms at 21C for 0.1 to 2.0 seconds.
>>
>>Clearly the 303 will be problematic in a camera applications where
>>called on to operate the shutter. According to the spec., one might
>>expect it to lock up with every shot. "
>>--------------------------------------------------------------------
>>
>>According to a lengthy post by Tim Hughes some time ago, when he was
>>researching batteries for new product development, some batteries sold
>>as 303s may be 357 equivalents internally, thus causing some possible
>>confusion as to whether they, in their true form, are adequate to high
>>drain camera application. So you could buy a set of 303s, find them to
>>be fine, then buy another and have trouble.
>>
>>My 5/1/04 post on "Battery Question" goes into much more detail about
>>why you want 357s
>>
>>A recent development is that Energizer has started sell ing a battery
>>marked "357/303" On 8/29/04 I said about it:
>>--------------------------------------------------------------------
>>"In any case, you don't want it, as the discharge curve is bad, like the
>>EPX76 - and it has a lower capacity than the 357 or 303, very strange
>>junk. Perhaps it's some new sort of cheap general
>>purpose, replace anything that size thingie. "
>>--------------------------------------------------------------------
>
>
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