That reminds me of something one of my acquaintances (who shall remain nameless) forwarded to me recently. It was a bit on testing batteries without a voltage tester and had a YouTube video showing (purportedly) that a good battery when dropped from two or three inches onto a hard surface will just stop, but a discharged battery will bounce. Then they go on to demonstrate. They claim to not know why it works, maybe gas change inside, but it just does. I haven't tried it, but it sounds like internet bunk to me. I could find the link, but of course it wouldn't prove anything. Any other bull**** meters going off?
"Opportunity is missed by most people because it is dressed in overalls and looks like work." Thomas Edison