battery test (NGC)

[slowmover]

Does this work?

www.youtube.com/embed/Y_m6p99l6ME

[Lannis]

Does this work?

www.youtube.com/embed/Y_m6p99l6ME

Has to!   You saw it on the Internet!  ;-T

Lannis

[Triple Jim]

I just checked half a dozen I found in a bag.  They're all good and don't bounce.  I'll have to wait until I find a dead AA to compare though.

 :pop

[Lannis]

I just checked half a dozen I found in a bag.  They're all good and don't bounce.  I'll have to wait until I find a dead AA to compare though.

 :pop

Best test would be to take one of your "Good" AA batteries, bounce test it, then discharge it in a flashlight overnight and test the same battery again on the same surface and see if the behavior changes .....

Lannis (let us know how it goes.  You think I'M spending $.70 on this?)

[Triple Jim]

You think I'M spending $.70 on this?)

That was my thought too.  It's going to have to wait until a bad one shows up by the normal method.   It's too traumatic a thing for me to purposely discharge an AA cell.  When I was about 4, I tried to make a penlight bulb light up with a carbon-zinc D cell.  I soldered wires to the bulb and D cell in many ways, finally giving up.  The next morning after Dad went to work, I went down to the workshop to continue my work and found a note Dad had left next to the D cell:  "This D cell is dead."  It also had a drawing showing how to connect the wires.  I had left a wire connected to both ends of the cell, causing a dead short.  I felt terrible that I had ruined the thing, and at the same time amazed that Dad knew it was dead just by looking at it.  I was equally amazed when I connected things as in his drawing and the bulb lit.

[Wayne Orwig]

Does this work?

www.youtube.com/embed/Y_m6p99l6ME

Yea, sure, right.

BTW, I have a bridge I'm selling. Interested?

[Triple Jim]

OK, by some tedious searching I found a dead AAA cell in my son's room.  It clearly bounced a couple times, when a new one does not.  No question, it's clear. 

The question I have is how dead does it have to be to bounce?  Like, if the flashlight is getting dim and the battery needs to be changed, do the cells bounce, or do they have to be nearly completely discharged?  The one I have that bounces reads about 0.3v on my Fluke 87, with no load other than the meter.  This will obviously be and ongoing project.

[LowRyter]

so far as little batteries: just lick your finger and place it on the (-) side and stick your tongue on (+) and you can taste it.

Just don't try it with a 9v.   >:(

My Grandpa taught me that.  It works. 

[Madtownguzzi]

so far as little batteries: just lick your finger and place it on the (-) side and stick your tongue on (+) and you can taste it.

Just don't try it with a 9v.   >:(

My Grandpa taught me that.  It works. 

That is my standard test for a 9 volt. Stick it on your tounge!!

[Sasquatch Jim]

 I use my tongue to test the 9V batteries that I use in the smoke detectors.
 If my eyes light up, they are good.  If my tongue just burns a little they are too weak for a smoke detector.

[Triple Jim]

Yeah, when I was a kid, we used to take turns licking 9v batteries for a thrill.  We didn't have thumb-typing devices yet.   :D

[rodekyll]

When we were kids we had old oak crank phones all over the property as a closed circuit intercom system.  We'd wire the spare crank generators to pitchforks, jam a pair of forks in the ground a few feet apart, crank like hell, and nightcrawlers would surface.  We'd sell them for bait.  For dares we'd hold the tines while someone cranked.  It would light up as many of us as dared join a chain.

[Triple Jim]

When we were kids we had old oak crank phones all over the property as a closed circuit intercom system.

When I was a kid, I would have thought that was about as cool as it gets.  Heck, I still think that.

[Triple Jim]

This morning I replaced the two AAA cells in a wireless thermometer display unit.  The LCD display had gotten dim, and the cells read about 1.1v each.  They bounce like heck compared to the new ones.  So this proves to me that any cells that are weak enough to not be useful will bounce. 

The remaining question is whether or not all cells that bounce are too weak to be of use, or do they become bouncy when still useful?