What device even uses this??
It's what 9v batteries are made of. 6 AAAA batteries in a box.
this post was submitted on 12 Apr 2024
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I have a flashlight at work that uses them. It's a PITA because we don't stock AAAA batteries at work so they have to be special ordered.
You can buy a 9v and open the case with some pliers and then boom. You go yourself some AAAAs
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One is shorter than the others. Triple, eh?
yeah, one of them is way shorter than the others but it's really wide to compensate.
I don't see it ; perspective?
Usually they're used in thin devices where a bigger battery wouldn't fit. Lots of computer styluses take AAAA batteries, including the Microsoft Surface Pen. There are also some small flashlights and laser pointers that use them.
Yeah I bought a 6 pack of them when I bought my pixel slate. They expired after I'd used two
microsoft surface pen is my touchstone for this. the only way i could get new batteries was online and the pen lasted for so long if i bought a pack of 4 batteries i’d have lost the other two but the time they ran or so id need to but a whole new pack.
I'm fairly certain you can take apart most 9 volt batteries to get at the AAAA batteries inside
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Save money buying just 1 AAAA battery and cutting it in half for two AA batteries.
I think they follow Hydra rules, if you cut it in half you end up with an AAAAAAAA battery
Hail Hydraaaaaaaa!
wacom stylus!
I had a pen and pad that copied what it wrote onto a palm pilot that used these.
it looks like batteries are screaming like AAAAAAAAA
Streamlight Stylus LED penlight
Wait until you see this:
https://brokensecrets.com/2010/12/20/9-volt-batteries-contain-6-aaaa-batteries/
Could have about 1/3 more charge if they were solid.
Why aren't they?
Because it’s a 9 volt battery.
Batteries are cylindrical because it’s the most efficient shape to make them in. There is a central electrode with the electrolyte around it. By making it cylindrical it’s distributed evenly. Imagine having it square, then in the corners the layers would be thicker than on the sides.
So that explains why the cells and normal AA batteries are cylinders. So why not have a 9 volt cylinder? That’s because the chemistry used for alkaline batteries produces 1.5 volts. A single cell, regardless of size, only produces 1.5V. So how do you get 9V out of a 1.5V battery? By putting 6 of them in series. 6 x 1.5V = 9V.
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I took apart a lot of batteries as a kid. The nine volts never had batteries like this inside them.
The carbon-zinc ones never do, but the alkaline ones do, the ones I opened, anyways ( a few decades ago )
some do, i have dissasembled some of them to look like this. not all of them though
Since seeing this picture I have disassembled about 50 nine volts looking for this and have found about 3. Some full of coin cells too.
Edit: I should say it was years ago I first saw this picture. I haven't disassembled 50 batteries in the last 2 minutes
I haven’t disassembled 50 batteries in the last 2 minutes
I reject your edit and substitute the original assumption
I should say it was years ago I first saw this picture. I haven't disassembled 50 batteries in the last 2 minutes
How many batteries can you disassemble in 2 minutes? I'm starting the timer.... NOW! Go!
Some have stacked flat cells IIRC.
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Obligatory AA AAA AAAA
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I use them in my active pens.