> Instead, under the bubble there is just a battery sitting in a formed
> recess in the plastic, with 2 spot-welded strips of metal connecting it to
> the cartridge. It appears to be something like a "CR2320" by Panasonic,
> but I can't really tell because part of the model number is covered by a
> spot-welded strip. The final part ("320") of the model numebr is clear
> however. My multimeter tells me that it's 3 volts. I'm pretty sure this
> is a common variety.
It probably is the CR 2320 because that is a standard number (like CR 2316 and
CR 2324, etc.) so you should be able to pick up replacement batteries anywhere
that sells cameras (stores selling mainly one use disposable camera doesn't
count)
And to answer your other post, they are *not* a rechargeable battery so you
were likely thinking of other devices. However those kind can last for years
with proper handling and care. Replacing it won't be so easy since soldering
the wires or connectors directly to the replacement battery can cause it to
explode, and finding a version with solderable tabs preinstalled are very
hard.
Good luck, and thanks for the tip.