I remember those.
Would be nice to have them on my 18650s
this post was submitted on 10 Oct 2024
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Just use your $200+ Fluke to check the batteries, problem solved.
They checked out
It failed often enough that it wasn't all that useful. A cheap battery tester is better. And for 9volts you can also use the tongue test, lol (don't really though). My grandfather used to do that all the time.
What's wrong with the tongue test for 9 volts? I know it tickles some but is it actually harmful? I've been doing that for over 30 years...
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There were cheaper ones with a tester attached to the box, maybe they were energizer?
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My dad used to just put them on his tongue for a power check. Not entirely sure how that worked. Personally I just use a multimeter.
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