At 08:28 AM 10/14/99 +0000, Dirk Wright wrote:
>At 03:52 PM 10/13/99 -0500, you wrote:
>>Anyone have info on the shelf life of Silver-Oxide and Mercury cells we
>use in
>>our OMs?
>>
>
>I think if you stick them in the freezer they last forever.
DO NOT stick them in the freezer! I had precisely this conversation with a
Varta tech rep. in e-mail last year, and he stated that mercury cells in
particular do not survive the freezing process well (if at all).
Apparently, the suspension in which the mercury is trapped separates out
upon extended freezing (more than an hour or so). This would also explain
why several of the mercury cells I've used in the past, outdoors at minus
25 Celsius, have inexplicably stopped working.
You can refrigerate any battery (though the Varta rep stated that the
benefits were dubious), but NEVER freeze them! Consumer Reports has
noticed through their extended battery tests that refrigeration of
batteries may increase life by a couple of percentage points -- hardly
worth it, IMHO.
Mercuries supposedly lose 2 to 60f their potential per year of storage.
Garth
"A bad day doing photography is better
than a good day doing just about
anything else."
The Unofficial Olympus Web Photo Gallery at:
http://www.taiga.ca/~gallery/
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