After some further reading and thought, I decided to try what I had on hand: 3 LR44 cells taped together and a small crumpled piece of foil as a spacer. After calibrating, success!
Makes for a much handier package.
And then I looked around on line and found Radio Shack part # 23-026:
a 3.6V 850mAh lithium cell.
Not especially cheap but I figured it ought to last a good long while. Headed off to my local Radio Shack and didn't buy one. Not that the battery was not going to work but because I encountered the worst attitude I have ever got in a retail store.
I was hoping for one basic piece of info: the physical dimensions of this battery. I should have just bought the damn battery and returned it if it didn't fit but thought I would avoid some hassle by trying to explain what I wanted. BIG mistake. The kid "helping" me wasn't listening and then got condescending as well. :bang:
Apparently I can "only use what the meter instructions say you can. Ya know, ya can't just put anything in there. Sigh. I'll have to look it up. Sigh." I really wish I'd had the Russian instructions that came with the meter with me--but then I'm some times a little evil that way.😀
The end of the conversation was a loud, "Go ahead and get it somewhere else, I don't care!"
It's sort of amusing today and I understand a little better why my folks were so exasperated with me as a snotty kid. But yesterday I was incensed.
Today, I went to another town close by--not for the battery but because that town has one of the few remaining camera stores and I neede some film and was hoping for a few filters.
And drove by another Radio Shack.
So I stopped in and was very pleasantly helped by the saleskid there.
The battery is not a perfect fit, there is a small gap between the aluminum plate and the body of the meter. But, after the calibration routine, it's good to go. I may either dimple the plate or drill it in the right spot so the positive end will mate with the plate better and then the fit should be fine.
Lastly, the battery itself is not a Radio Shack brand but a "SAFT" brand and that part/model number is LS 14250.
Rob