General > General Technical Chat
30 year old AA cells
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andy2000:
One advantage of the old zinc carbon cells is that they don't contain large amounts of liquid to leak out.  They're good for low drain test equipment like a VOM.  Alkalines tend to leak before they run down in low drain applications. 
SilverSolder:

Interesting, so perhaps it is time to let zinc-carbon cells in from the cold, as an alternative to expensive lithium batteries?  (obviously, alkaline is firmly on the "Uninvited" list!)

@rt:
That’s so cool! In my childhood in Australia, the text was different, but we had the same logo and black cat with the nine (lives I guess).

 I came close to seeking these out for photography for retro toys, but I’m less interested in the collecting lately.

Circlotron:

--- Quote from: @rt on September 22, 2020, 10:54:04 am ---That’s so cool! In my childhood in Australia, the text was different, but we had the same logo and black cat with the nine (lives I guess).

--- End quote ---
Yep. Sparky the cat getting hit in the bum with a lightning bolt.  ;)
Buriedcode:
I'll just add another datapoint to the zinc carbons lasting ages - as in shelf life.   Found a pack of C cells in my garage from the mid 90's.  1.48V.  I have never seen them leak, but I believe they do have very limited capacity as well as relatively high internal resistance.

The most modern instance I have seen them was with what came with an Omron blood pressure monitor.  I'm not sure why they shipped them as its a relatively high drain application.

They are also used in battery adverts as a marketing comparison "lasts 4 times longer! *"

*when compared to zinc carbon

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