On Mon, Aug 24, 2009 at 2:11 AM, Tim Hughes<timhughes@xxxxxxxx> wrote:
>
> http://www.maine.gov/dep/rwm/publications/legislativereports/pdf/buttonbatteriesreportjan09.pdf
>
> This article has general information about totally Mercury free button cells.
> They say longevity is unknown at present, as well as incidence rates of
> leakage etc. Seems like capacity and other characteristics may be lower too.
>
> After 2011 these may be the only types of cells available in many places.
>
> Interestingly NL is suing some other Chinese manufacturers for infringing
> their Hg free patents.
>
> Tim Hughes
Thanks for the link, which has a lot of good information about the
battery situation. I hadn't realized that there was still as much as
2% mercury in some battery formulations. It looks like the 357 form
factor is safe at least. Interesting that Olympus was cited as a user
of the Hg-formulated SO batts via its "endo" products.
There seem to be a couple Sony formulations? I wonder if the problem
some people have had with one of the online battery sellers which
offers them is that they are apparently pretty hard to come by.
I too have a small stash of the old 357s and I'm pretty careful to
remove them from my OM-2S and OM-4 when I'm not using them for a
period of time.
Joel W.
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