For a long time now I've used nothing but the industrial versions of Duracells. They used to be marketed as Industrial by Duracell and now as Procell.
I have no complaints. Just checked my store of new batteries, quite a range of sizes and ages -no leakers !
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Checked the batteries in my Fluke 89IV DMM (4 x AA), hard to tell - the Procells in it might have been leaking but the terminals have been corroded a long time ago (its 25 years or more old) by some rubbish batteries. I changed the Procells any way.
My Fluke 84III is powered by an Industrial 9V which has a best before date of 2020. It isn't leaking but has some black goo on it from the decomposing black foam rubber installed by Fluke.
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But I can offer a valuable research resource to the curious.
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I used to buy coffee which came in large glass jars which were too nice to throw away. When I moved to my present location in SW Scotland more than 16 years ago it became harder to get rid of dead primary cells so I took to storing them in the coffee jars and somehow I've never got round to getting rid of them. So I have a collection of getting on for 500 dead batteries, mostly alkaline, mostly AA, many different makes and in various stages of decomposition.
If anyone would care to collect them from SW Scotland (for obvious reasons they can't be posted) and do the necessary sorting and analysis, I should be pleased to see the back of them.
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MK
