>
> You didn't say if you got Wein cells or hearing aid batteries.
> It's probably plenty bothersome but you can extend the battery
> life by re-covering the air holes when the batteries are not
> in use. But as I recall uncovering the holes doesn't give you
> instant power. You have to wait a while until the batteries
> "boot up".
>
> I also seem to recall that Wein cells last longer than hearing
> aid batteries by virtue of having fewer air holes. I suppose
> you could reduce the number of air holes in hearing aid
> batteries but that would probably be fussy work to do so
> without introducing an insulator between the batteries.
>
What I got was hearing aid batteries, which generally cost $1 or less
each. Those Wein cells cost $5 and more, even on eBay. I'm going to see how
long these last before venturing to make my own silver oxide adapter. For the
time being, I'm happy to have a working Luna Pro with the spot meter attachment.
Chris
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