Make sure, that the Battery is not only 1.5V but also silver. Alkaline is not stable enough for this. AFAIK the PX625A is alkaline.
That's a good point. Your lithium cell idea looks more promising now. Not necessarily with a regulator though. I may do some experiments with an LED in series instead of the schottky diode. A 1.7v drop with a 3v cell = 1.3v so it could work.
I know the regulator is the most accurate approach but I also like to think in terms of simplicity.
"People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.
Hi Again all,
I have been informed that zinc air batteries that can be purchased at stores in towns have them cheap like .70$us? I guess that would be in the 675 size? What problems does that have with it and can it be solved with an O ring of rubber? I see there's a guy on the bay that sell the adaptors I wonder if there is plans for it on the web so one can do it oneself? Any other drawbacks to this method of battery I hope someone can answer these questions,please!!
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.
Hi all, I wonder IF anyone knows of a source for Energizer 357/303H batteries not the 357/303 everyone has listed for sale? The 357/303H has a flatter discharge curve like the mercury battery has sort of has from what I can find out so far!! I hope someone knows?