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What Happened To Duracell PowerCheck?
(hackaday.com)
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this post was submitted on 10 Oct 2024
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I was a kid then, but I remember that I had to push so hard my fingers hurt... I used a multimeter.
Well the pros and cons of the multimeter are addresses in the video! He uses a meter on a dead battery and it still shows a deceptively reasonable voltage when not under load. The built-in tester draws more current.
My technique is to use the 10a mode on the multimeter and check the battery. A full AA will do nearly 10 amps and dead ones much less. Careful with larger cells or rechargeables since you might blow the fuse in your meter.
That sounds a little like testing matches "Yes, that one works. I mean: worked."
as a kid I would shove them up my nose not to be seen again until out they would pop from the other side...miraculously charged.
Let me introduce You to these spent uranium fuel rods.
you just had to put one of the other fingers on the battery groumd and not push that hard iirc