If one purchases one Wein cell, it is actually a 675 with a snug metal ring around it. When the battery expires, simply go to your local Walgreen's etc. and buy a package of 675 hearing aid batteries. Push the old battery out of the ring and install a new one. You're in business. I have been doing this for years.
Some cameras will not work with the rubber washer/grommet around the battery as contact is needed to the outside wall of the battery compartment.
If you want to prolong the life of the battery during times of non-use, simply put Scotch tape, or any tape for that matter, over the little holes that allow air inside the battery. This keeps the electrolyte from drying out prematurely. Zinc-air batteries have a shelf life of several years (4-5) as long as you keep those holes closed.
Last edited by Fred Aspen; 01-12-2009 at 06:39 PM. Click to view previous post history.