At 05:28 AM 5/5/2005, you wrote:
>I was looking at a "REVITALIZING KIT" on ebay, says it includes, "A fresh,
>new in the package 1.35 volt 625 Wein Zinc/Air "Button Cell" Photo
>Battery, specially designed to replace discontinued mercury batteries"
>Have any of you used these batteries? If so, what do you think of them?
>
>Thanks in advance, Darin
Darin,
They were designed specifically for camera use and although it's the same
as the hearing aid cell technology, they have more capacity (will last
longer than a 675). That said . . . once the cell is activated its
life-span begins . . . as with all zinc-air.
There are a number of alternatives, the one I use in an OM-1n, a Rollei 35S
and a light meter is the MR-9:
http://www.criscam.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=CCS&Product_Code=MR-9&Category_Code=MBA
Their home page is here:
http://www.criscam.com/index.html
It is made of metal . . . should never need replacing (the adapter) unless
you run over it with an Abrams tank. It has a diode inside it to step-down
the voltage (no drain unless there's a load across it; i.e. camera turned
on), and is based on a "home brew" design that used half of an expended 625
cell to make the adapater. Buying it is likely less than the value of your
time assembling the parts and making one yourself that's as well made as
these are. Uses readily available silver-oxide cells that maintain
constant voltage until the bitter end of their life (do *not* use alkalines
in them). I found the silver-oxide cells last quite a long time (provided
the camera is turned off when not in use).
-- John Lind
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