Instructables
Picture of 9 Volt Battery Hack!
Here is how to extract 6 AAAA batteries from one 9 volt ENERGIZER battery and use them like AAA batteries!



 
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Step 1: What You Need...

Picture of What You Need...
1 ENERGIZER 9 Volt Battery.

ATTENTION: I do not know if this works with any other type of 9 volt battery. If you try this and end up with something other than what I show you, then you are not using an ENERGIZER battery.

2. A pair of needle nose pliers and a small screwdriver

3. Optional: Gloves

Step 2: How To Do It...

Picture of How To Do It...
Along the edge of the ENERGIZER 9 volt battery is a crease where the case is joined together. It is basically just crimped together to form a seal. Using the needle nose pliers and if needed, a small screwdriver, carefully peel apart the ENERGIZER 9 volt battery. BE CAREFUL!

Step 3: What's inside...

Picture of What's inside...
When it comes apart, you will find 6 "AAAA" or "quadruple A" batteries that each hold 1.5 volts, the same as a AAA battery. Remove the batteries and also the metal tabs that connected the batteries together.

Step 4: How to Use Them...

Picture of How to Use Them...
Since these hold the equivalent voltage as a standard AAA battery, they can be used in a device that holds AAA batteries. The only difference is that they are a bit smaller in length. That's why you need the connector tabs. You can fold the tabs over and use them as shims between either the positive or negative side of the new AAAA batteries and use them in any device! Have fun!
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mattj21 month ago

I tried energiser alkaline 12-2019 (black and silver), Panasonic NEO extra long life (black and silver), and Panasonic Hi-TOP long life (red and white) and they all had the flat cells, no AAAA's

cheezyguy57 months ago

Here's a tip, If the battery is a HEAVY DUTY or SUPER HEAVY DUTY battery, there will be a thick, toxic (if ingested) gooey paste, if it is a ALKALINE battery, there will be six AAAA battery cells inside.

Ha cool i thought you could only lick 9 volt batteries
(removed by author or community request)
It works on certain kinds of batteries and not others. They probably just tested the wrong battery. It has worked for me.
jordan47623 years ago
Works with CVS value brand =3
I just did it today and for everyone who thinks this is a hoax look at what I got
2011-10-08+13.11.15.jpg
jgilbert133 years ago
What about a DG home Heavy Duty 9 volt?
Official HOAX.
kipkay answered you...COOL!!!
Kipkay (author)  thatoneguy9006 years ago
WRONG. Do you want to come over and I will do it before your very eyes?
NarNar Kipkay5 years ago
Burn.
ravebot Kipkay6 years ago
yes i want to come over if your still inviting
what happened to you ,spongebob?
bad things very bad things "sob" it hurts just thinking about it
you're avatar is scary...i died by looking at it(Get it?)
oohhhh!!! me! me! me!
Sure!
HeyJD4 years ago
I opened my 9 volt battery and found some sort of acidic paste inside...
what brand?
Uh... I ripped of the label saying what brand it was.
But it was kind of like button cells stacked on top of each other.
It's just that these 'cells' were see-through and had paste inside.
bad brand, try duracell
unclex63 years ago
I did this and one of the AAAA's exploded in my face
Y U Lie?
mattryes5 years ago
This is an excellent hack when you need to replace AAA batteries, but when you need AAAA batteries,there are more differences between these cells and store bought AAAA cells; 1) The polarity is reversed so that the negative terminal is the one with the little "Button" on it, 2) that little button doesn't protrude as much as on a store bought cell, and 3) the hacked cells are just a tiny bit shorter than their expesnsive counterparts. My Streamlight Stylus LED flashlight won't work with these cells. I think that it requires the positive terminal to protrude into the LED assembly. I tried to remove the "button" from and old AAAA battery so that I could use it to extend the flat positive end, but I was unsuccessful. Does anybody have any suggestions that would make these AAAA batteries more functional? Thanks, Matt
try some aluminum foil but tape it as it will short out the battery ( At one end The button end must not short the case to the anode ( the center post) ps...make a little ball with the foil, hot melt it if you wish, but only on the perimeter as glue will insulate an no power! again the tape cannot cover the top it also will insulate and no power will flow!!!
need a bigger battery? wrap tape around the battery can make it fit anything requiring 1.5 volts.
you mean foil right?
In my case the batteries were identical except the positive side did not have the little plate with the little "button" on it and on the commercial AAAA's Ive seen the negative has a "button" but it does not stick out as far.
durgledoggy3 years ago
Bear in mind this only works for some batteries.

The ones that have worked for me have been Varta, Philips, Sony, Duracell and Energizer. Vata are by far the best, they have the polarity marked on them and they just fall out without having to cut any connecting wires.
Other brands may work, but you could very easily find yourself with an open battery and 6 flat cells that can't be used for anything.

See: http://commons.wikimedia.org/wiki/File:9V_innards_3_different_cells.jpg
Diex20053 years ago
I've done this too, and found a black paste-substance. I think it's only in rechargeable batteries though. I havent tested that theory, since I ONLY buy Rechargeables.
gunman154 years ago
mine were fatter and widder
I did to a battery but it didn't have that in it. it had something in it that looked like a layered cake. can some one explain me what i found.
the instructable is made up when he opened it he replaces the layer cake with aaa batteries that have gotten theyre label removed
it depends on the battery, the alkaline ones should have the AAAA's in them, and the "super heavy duty", or "heavy duty" will have the other type.

I just got some new AAAA's for my tablet PC digitizer out of a Duracell 9v battery, so some do have it!
i was being sarcastic
No, because I have done the same thing. There are different kinds of 9V out there.
i was joking
ops i forgot to wink*wink wink*
Oh, you probably had some kind of wierd brand. Try Duracell and Energiser. It's worth the price, because you don't get a cake. Unless they changed their design into a cake...
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