A friend sent this to me.
I’m highly suspicious this is nonsense… but without proof/testing, you can’t be sure.
Not to good idea to drop batteries like this. It can damage the cell.
Tested it on 1.55v and 1.38v batteries and it works.
it easier to test 9v battery,just stick your tongue and put at it
if jolt you with electric shock that battery is good to go J)
Well, bad news, just tested my car battery. Fully charged & got one bounce!!! Broke my toe, now headed to the hospital! 
Just kidding. Guess it could work. Gonna give it a try. Not sure of the sound science in testing of 2 different brands. Cool idea none the less.
I have tested it, a new battery bounces less than an empty battery (tested with Aerocell AA (alkaline from Lidl)).
But at 1,4V it already bounces more than a new one (1,6V), you will still need a voltmeter because if you check it with the “bounce test” you won’t use the complete capacitiy of the battery.
I don’t think the steel shell changes much, so it must be the stuff left inside or the pressure. Perhaps the zinc powder deforms inelastically and damps the bounce and the inside is more liquid after it is oxidized?
Crazy. Off to test some batteries..
Sorry, but I don’t buy this at all. Notice that the “test” was performed on a tile counter top. Also notice that the test was performed on two completely different batteries. That’s legit for a ‘comparison test’, isn’t it? Umm - no, it’s not. What if you had a granite, steel or wood counter top or table/work bench. How about concrete? Would the results be the same? Maybe this only works with ceramic tiles. Is there a chemical change between a charged battery and a discharged battery? Sure. Enough to to do a “bounce test”? I sincerely doubt it.
Hmm. Doesn't work for me.
But I'll venture a guess as to why it could work. As alkaline batteries are depleted pressure rises internally. If you, like me, have a large glass container into which you collect used batteries you may have heard them "vent". I heard it the first time many years ago and then again just recently. It makes a sound when they let out the gooey corrosice stuff.
I tried this with my new Eveready AA batteries and they never remain standing even once.
Should start at 25:30 if the link works correctly…
This video is pure BS, watch carefully the battery that don’t bounce are attracted to a magnet mounted below the desk, when you look carefully you can see the battery move sideways when the plastic tube is removed.
You tube is full of shenanigans. I’m sure posters of the video get their jollies making such videos.
I disagree, it’s simply the way he edited part of his video that makes it look like that, as he’s transitioning to a new section.
Watch the entire video, take note of his battery testing methods (which is stricter than most of the testing you see on BLF/CPF), this guy isn’t a BS’er by any means; and has an understanding of real electronic theory.
Dave L Jones at EEVblog is an opinionated but very knowledgeable expert in his field. You can take what he says/reviews to the bank. Since most of us here have gone down the rechargeable path and are trying to avoid alkaleaks, this isn’t that useful. Does anyone know if it works on ZnCl/Znc batteries?
PS
Have a look at Dave’s EEVblog - well worth it!
I just grabbed two charged Chinese alkalines and dropped them on my plastic-covered table. It seems they normally thump down and fall over, but occasionally they thump down and stand up, and occasionally they bounce. It could be an angles game with some of the reviewers. I will deplete one battery and try again.
Ran one battery down to 1.26V and dropped the batteries. I can verify that it matters how the battery is dropped. With a slight change in angle, the battery bounces several inches, charged or not. When dropped properly, it can fall like a rock and stand upright. Normally it is a slight bounce followed by a fall.
I’m sure the author of the video just wanted to show off