paulfish4570
Veteran
Did I read that here? If so, I do not recognize the thread ...
GIII battery equivalent 675 with 0-ring?
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ray*j*gun
Veteran
Well, the 675 hearing aid battery is, I believe, a 1.4 volt battery that some have used to substitute for the PX625/PX13 mercury battery (1.3 volts) using O rings. I think I remember that the O ring needed is #9.
I have never tried the substitution but many here have said its a good solution to the PX extinction.
I have never tried the substitution but many here have said its a good solution to the PX extinction.
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paulfish4570
Veteran
I think the 625 still is available in a non-mercury form ...
sig
Well-known
this one explains everything: www.butkus.org/chinon/batt-adapt-us.pdf
Kim Coxon
Moderator
One solution for the GIII is to remove the top cover. Then on a sunny day or at least very bright day, you can adjust the meter via the usual trim pot to take silver cells.
It has to be on a bright day though. The difference between the 2 cells gets greater the brighter the light.
PS. The nominal voltage of mercury and zinc/air or wein cells is exactly the same as they have the same chemical reaction to produce the juice 😉
Kim
It has to be on a bright day though. The difference between the 2 cells gets greater the brighter the light.
PS. The nominal voltage of mercury and zinc/air or wein cells is exactly the same as they have the same chemical reaction to produce the juice 😉
Kim
paulfish4570
Veteran
Thanks for the help, guys ...
40oz
...
just get a Wein cell at your local camera shop. That's what they are made for.
Matus
Well-known
Wein cells (Zinc-air) are pricey, but available in many sizes. Just google a bit to find a retailer. Hearing aid batteries are supposed to last only about a month. Tha Wein cells about a year. I have recently bought several for my Konica S3.
kuzano
Veteran
Mrb625
Mrb625
The appropriate Wein Cell of the correct voltage and size (1.35) is the MRB625, and they are available from a few eBay sellers @ 2 for $8 and with shipping generally $10-11 total.
Have one in my GIII and one fresh in the desk. I take them out and tape the holes shut when the camera is going to be in the bag for a long time.
Mrb625
The appropriate Wein Cell of the correct voltage and size (1.35) is the MRB625, and they are available from a few eBay sellers @ 2 for $8 and with shipping generally $10-11 total.
Have one in my GIII and one fresh in the desk. I take them out and tape the holes shut when the camera is going to be in the bag for a long time.
paulfish4570
Veteran
Thank you, kuzano.
mwoenv
Well-known
I'm very happy using 675 hearing aid batteries in an adapter (which contains an o-ring) sold by www.camera-care.com ($22 for the adapter, two 675 batteries and shipping). It provides 1.35 volts and if you remove the battery (675 and adapter) and put the protective tab on the + when not in use, the battery lasts a long time.
