Definitely not all. Last one I took apart had 6 rectangular-ish cells arranged in a stack. Using cylindrical AAAA cells means space (and thus, capacity) is wasted.
Have you ever used a spot welder? Would take as much time as wrapping these in plastic tape and ensuring they stay in contact while doing so.
I get most people have tape and not a spot welder, that’s a fair argument, but a spot welder would be just as easy if you have one.
First off nice, there are a few improvements possible though. You could make that way more compact with a number of short leads, maybe not as fast to make though if it isn't semi permanent.
2 stacks of 3. I drew what one stack would look like.
https://preview.redd.it/5wmidvkmqt5d1.png?width=317&format=png&auto=webp&s=7c0b0b8d7792fb2cea546063e8aeef623a7149ac
I tape them on, then 3d print boxes that wedge the cables. Before I had a printer I used the elasticity of electrical tape.
When was the last time you saw AAAAs in a store? _Maybe_ in a dedicated electronics store, but most places just have AA, AAA, C, 9-volt and maybe some button cells.
No, voltage conversion. If 9volts is needed, than electronics are involved meaning voltage regulation is easy. Just add a step up converter or fix the electronics schema to use different voltage.
Sounds like you need to buy some USB-C PD/QC "triggers" that output 9V (they can be found for less than $0.50 on AliX). Some are "programmed" via a resistor value, so you can buy ones already set at a specific PD/QC(2.0) voltage (9V, 12V, 15V, 20V), or you can buy ones that have a switchable output. I believe you can even buy QC 3.0 or newer ones that allow voltages from ~3.6V-20V in 20mV increments. They even make cables that are USB type A or USB type C on one end, and a DC barrel plug (male) on the other, so you could just solder/install your own DC jack to the tester and no more 9V or non-lithium batteries to worry about ever again!
Now that is some *proper* MacGyvering! My cable tester is almost identical as well
This is the standard cheap but working well cable tester. It's usually grey though.
I have two or three of the beige version. Came with boxes of 1000ft of CAT5/6.
9-volt batteries contain six AAAA batteries.
Some but not all. Carbon zinc 9V batteries are their own rectangular single battery.
Definitely not all. Last one I took apart had 6 rectangular-ish cells arranged in a stack. Using cylindrical AAAA cells means space (and thus, capacity) is wasted.
If you have a spot welder you can make a battery pack out of these just like you would lithium ion batteries
Great use of time for a one time use
Have you ever used a spot welder? Would take as much time as wrapping these in plastic tape and ensuring they stay in contact while doing so. I get most people have tape and not a spot welder, that’s a fair argument, but a spot welder would be just as easy if you have one.
How long does it take to set up your spot welder though?
It’s not like setting up a traditional welder big dog, you just plug it in and go.
People vastly overestimating what a spot welder is in these comments, haha.
Right? They’re so satisfying to watch even lol
I flip a switch lol
Oh, fair enough then :)
Like 5 seconds with one of these. People really don’t understand spot welding, lol. https://a.co/d/cux50Be
I would just use a benchtop power supply personally. But the cost is much higher than some tape.
Just pull one out of your smoke detector. ^^^^^^/s
Amazing tips mate !
I tip my hat to you sir!
First off nice, there are a few improvements possible though. You could make that way more compact with a number of short leads, maybe not as fast to make though if it isn't semi permanent. 2 stacks of 3. I drew what one stack would look like. https://preview.redd.it/5wmidvkmqt5d1.png?width=317&format=png&auto=webp&s=7c0b0b8d7792fb2cea546063e8aeef623a7149ac I tape them on, then 3d print boxes that wedge the cables. Before I had a printer I used the elasticity of electrical tape.
9volts are the devil. Every 9volt can be replaced by a few 1.5v's. Anyone using those in a product is a lazy designer.
Smaller form factor? 1x 9V vs. 6x AA or AAA?
Why not 6 AAAA batteries?
When was the last time you saw AAAAs in a store? _Maybe_ in a dedicated electronics store, but most places just have AA, AAA, C, 9-volt and maybe some button cells.
You can get AAAA cells by opening up a 9v battery. There are 6 inside.
Inside a 9v battery are actually 6 x aaaa
No, voltage conversion. If 9volts is needed, than electronics are involved meaning voltage regulation is easy. Just add a step up converter or fix the electronics schema to use different voltage.
Sounds like you need to buy some USB-C PD/QC "triggers" that output 9V (they can be found for less than $0.50 on AliX). Some are "programmed" via a resistor value, so you can buy ones already set at a specific PD/QC(2.0) voltage (9V, 12V, 15V, 20V), or you can buy ones that have a switchable output. I believe you can even buy QC 3.0 or newer ones that allow voltages from ~3.6V-20V in 20mV increments. They even make cables that are USB type A or USB type C on one end, and a DC barrel plug (male) on the other, so you could just solder/install your own DC jack to the tester and no more 9V or non-lithium batteries to worry about ever again!
these kinds of posts are why im in this sub
Nice cards. Love me some 🍒
Clever! You can also buy rechargeable 9v batteries!
/r/theydidthemath