Hi, I just checked the Wein replacement cell for the mercury PX13 in my
Sinarsix (based on the Lunapro but is placed like a film holder in 4x5
cameras)
and it does not reach the battery check mark. I didn't know the Wein cells
went out so fast. I think it's only been a couple of months since the Wein
battery was activated.
Thanks Tim! I'll probably go for the CRISS adaptor for both the
Mamiyaflex
and the Sinarsix.
Best, Rich
On Fri, Dec 9, 2016 at 1:31 PM, `Richard Knoppow <dickburk@xxxxxxxxxxxxx>
wrote:
I was referring to the zinc-air cells used in hearing aids. They are
also very similar to mercury cells in characteristics but comparitively
short lived. Mercury cells in applications like exposure meters lasted for
years. Once the air seal is removed from a zinc-air cell it has a life of
perhaps several weeks. I have been keeping track of the ones in my Nikon F.
I also have hearing aids that use zinc-air cells. They are much smaller
than the ones in the camera. I found that even without use they do not last
more than a couple of weeks once the seal is removed.
I suspect its possible that a mercury cell recycling program could be
made workable by charging a returnable fee as some states do with bottles.
Administrative costs might be too much for this to be practical.
On 12/9/2016 1:12 PM, Tim Daneliuk wrote:
On 12/09/2016 03:03 PM, `Richard Knoppow wrote:
The life is fairly short
That's surprising. My experience using them with the CRIS adapters
is that they last a very long time, much like an ordinary battery.
Then again, I turn the meter off when not in use.
The problem with replacing mercury cells is that they had very constant
voltage until almost dead.
That's why silver oxide is such a good choice. It mimics mercury battery
behavior very nicely.
--
Richard Knoppowdickburk@xxxxxxxxxxxxx
WB6KBL
