Those little 675 hearing aid batteries are awesome

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mudman

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I just received a Nikon F off of craigslist, with the Ftn meter. Unfortunately, the Ftn meter takes the old mercury cells, which are outlawed in the states. I found a good substitute, that seems to be cheaper than the wein air cells that people sometimes use: 675 zinc air batteries, 2 orings and aluminum foil. The o rings make it so the batteries don't rattle around in the battery chamber, and the aluminum foil completes the connection. Total spent (besides the batteries): $0.80. Much cheaper than the criscam adapters or even the little metal rings someone is selling.

Cheers,

Eric
 

elekm

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The 675 hearing-aid batteries are one of the best ideas and values for older cameras.

Once in a while, you'll get a camera that requires the physical shape of the old PX13/625 battery.

But for most, you'll find that a 675 + "O" ring works fine. I've used metallic washers from the hardware store.
 
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mudman

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Hey Mike

Which washer did you use? I couldn't find one that was the right dimensions, which is why I went with the rubber o-ring.
 

LaGrassa

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I recently did this with my Minolta Hi-Matic 7S Rangefinder and it worked great. Very economical solution.
 

MattKing

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John Goodman (interslice on eBay) sells an inexpensive custom adapter that you insert the 675 battery into. The resulting package duplicates the shape and connectivity of the old mercury 625 batteries.

No connection, satisfied customer, etc.

Matt
 

Thagoson

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Instead of O-ring or washer, you could also use the solid copper wire of about 2 mm and wrap it around a pen that just a little smaller than the cell and cut it into a ring. It will expend and fit on the cell nicely.
 

Excalibur2

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***Those little 675 hearing aid batteries are awesome***

Indeed, they work very well in my hearing aid.....in the UK I get mine free.
 

Steve Smith

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Indeed, they work very well in my hearing aid.....in the UK I get mine free.

Even if you have to pay for them, a pack of six are almost free anyway at £1.60 from Boots.


Steve.
 

brian d

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Indeed, they work very well in my hearing aid

me too, I'm basicaly deaf with out them

in the UK I get mine free.

not so lucky in the states

I have used them in a old Honeywell 3/21 spotmeter
 

JCJackson

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You can also make your own conductive ring out of 12 gauge copper wire. With needle nose pliers and a bit of patience you form an ring with a small gap. It should have just enough spring to it to fit the battery. I am using this with 675 battery in a Nikkormat ftn, and it works just fine.
 

Pumal

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You can have a metal 'O' ring by cutting it off a spring.
 

brian d

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Are you not heading in that direction though? (National Health Service).

I guess it is very possible but I fear what it might be like under gov. control
 

Pumal

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I hope you find the money for all that. They tell me The Fed. is furiously printing Dollars in the Basament
 
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