Button Cell Replacement Idea: FAIL

I've mentioned alkaline button cells and their leakage problems before:

https://wb9kzy.blogspot.com/2023/07/the-remaining-unsolved-battery-problem.html

I had an idea for at least a partial solution to the button cell leakage problem.  I have some thermometers that use two button cells.  So I thought I'd use a single CR2032 lithium cell to replace those two alkaline cells.  I've got a bunch of single CR2032 holders (with a built in switch) along with some CR2032 cells so I'm all set, right ?



Nope, it won't work because I found that the two button cells are connected in PARALLEL not in series.  So the lithium 3V cell would have too high a voltage.

It was just an idea :(  I will keep looking but for now will use this approach with an AAA lithium cell:



https://wb9kzy.blogspot.com/2024/12/finally-got-something-off-shame-shelf.html

I added a magnet on the back of the battery holder:



Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm