Battery Bounce Test - tell full from empty by dropping it!

Somebody told me about this and I thought it must be a joke. This can't be real... it's just another hoax. But then I tried it. It really works! No matter how crazy it sounds, you really can tell a full AA alkaline battery from an empty one just by dropping it. The full battery doesn't bounce, the empty one does bounce.

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[bernadetteleach]

The good sound quality really helped me find the difference.

[lajoswinkler]

Indeed, you can even tell by the sound when you smack them with your nail. Full ones go like "thump" and empty ones "ding". It's connected to the electrolyte density inside. It changes during discharge. :)

[WV]

what you know. now we can get rid of all our multimeters. does it work with car battery?

[brandonff]

If you take a dead alkaline battery and slam it gently on the floor(hard surface) horizontally, you can get a little extra out of the battery. I learned this in Haiti while on a medical mission trip 3 years ago and we had some batteries go dead in one of our instruments at the end of the trip, the local Haitians call it the Haitian recharge. Got us through the last day and I use this at home now to get more out of my alkaline batteries. Just when you think they are done, give them the Haitian recharge!

[danhouthoofd]

I appreciate the high production quality of this video.

[brianhepke]

Great stuff...yes I have known about this for sometime now, but can never remember which is the bouncing one...thanks for clarifying!

[bjbalegar]

Very nice explanation. Watched it without an audio, still worked.

[garvv]

I have a 1600 mah battery and my charger output is 2.8 volt and 200ma
How much time it would take to charge 4batteries at a same time? Pls tell fast

[canningpark]

What about putting the empty battery and the full one on the weighing scale is there any different??

[spotdott]

Came for facts, stayed for the dedication

[Eratas]

I quess battery swells a little while discharging. So bottom is is not perfectly flat anymore that causes bouncing?
I heard that this test works only on Alkaline cells. But not on: Lithium, rechargable NICD, rechargable NIMH, zinkcarbon.

[frenchrevenge]

TYSM, today my mouse started to have difficulties with moving the arrow and i was wondering if it was broken. Now that I tested it, the batteries really bounced

[PinkeySuavo]

what a time to live in to learn about such random stuff

[WolfTheDog]

This is cool. Now I can test batteries without a tester.
Seems to work just as well with AAA, C, and D batteries. I wonder if it works with 9 volt batteries.

[utubeuser]

I love your accent!! Also I wonder if this trick works on rechaegeable batteries!!

[Nathleep]

Man u funny as hell. The video is useful too

[Zzzzzzzzz]

Italiano gone wild, love the accent man ❤😂

[laszlovona]

Hey your accent is so funny/pleasant to listen 😉 it goes really well with the quailty content you produce! 👍

[ozcanonal]

Unbelievable..! I learned something today, thanks..

[MobileDecay]

This doesn't work with rechargeable batteries. They bounce no matter what.