The Toy Build

[BobZilla]

I sent you a PM with my email.

[RS_]

if you have my email, email me, if not PM me for it...... I use FreeCad and Open SCad for my 3D designs. I have a nice 4 head 3D printer.... Still learning all the tricks of the trade.....

[BobZilla]

Oh no,, sorry about your flashlight. I have not seen them damage anything in that way but I'm sure it's possible.

RS if you would like me to I'm happy to draw something up for you. I could print it off for you too if you don't have a printer. If your interested we can talk via email or PM about the details.

[RS_]

Yes, I bought a bunch of the Ni-Zn AA size battery's, and they worked good in my 5 for 1 solid state SSG charger...... need to build a better test discharger to get good COP numbers before i post about it.... Been real busy with the new building and other RL work, and have not had much time to do that kind of thing.

the higher Voltage will make a Flash light shine VERY Bright.... My harbor fright 209 LED flash light burned out some of the LED's when i tried them in it, Because the Voltage was so high from charging on the Bedini Universal charger. will buy some more of these Ni-Zn AA and other size battery's for general use soon

BTW, i like your 3D printed battery bank holder.... something like that would work good for the 5 for 1 SSG to hold all 5 of the sets of 4 AA's charging batterys, and then wire it for charge / discharge swap outs with latching relays using a 2nd 3D printed battery bank holder

Happy New Year to all......

[BobZilla]

Happy New year Group!

RS ,, You ever get any of those cells to play with? I'm curious if you did what you think.

I am working on a 3D printed battery design for those LFP cells I bought years ago. I am waiting on a new spot welder to arrive before I can really get to work on it but here is a little preview of the cad design. It will have 64 cells total which comes out to 88AH when put into 16 cell parallel trays in series.



I will add more details to my old LFP post when I get rolling on it.

I also have the itch to make some new projects after taking a few years off from it.

[BobZilla]

I like that alot! Kind of reminds me of the unit I built out of auto relays but much bigger.

[Deuis]

Wow that looks fantastic! Love the bare build in the second pic, so uniform and clean!

My large machine has not been in service for a long time. I goofed up one day and fired it up with one of my switches in the wrong position effectively running it with no load for a few minutes until I realized what was happening. It blew transistors out and of course I don't know which ones so I would have to disassemble all the circuits and test. I just set it aside and started using my other machines, I would have to check 32 transistors. I might do it but I was thinking about just building that machine out with some solid state relays instead.

Yes switching was always annoying so I built this.
Was thinking about silver plating it but it will do for now.
Enough copper in it to handle the 28 coils it will be running.

[BobZilla]

G'Day Bob,

Chugging away.
Progress is slow.
But results look good.

[ATTACH=CONFIG]7400[/ATTACH]
[ATTACH=CONFIG]7399[/ATTACH]

Wow that looks fantastic! Love the bare build in the second pic, so uniform and clean!

My large machine has not been in service for a long time. I goofed up one day and fired it up with one of my switches in the wrong position effectively running it with no load for a few minutes until I realized what was happening. It blew transistors out and of course I don't know which ones so I would have to disassemble all the circuits and test. I just set it aside and started using my other machines, I would have to check 32 transistors. I might do it but I was thinking about just building that machine out with some solid state relays instead.

[Deuis]

Hello everyone, been awhile, how are the experiments going these days?

G'Day Bob,

Chugging away.
Progress is slow.
But results look good.

[BobZilla]

Would love it if you post your experiment. These are great batteries, I don't know if they will provide the right performance for your application but it's certainly worth trying if you can spare the funds. I don't have my pc and meters setup like I used too or I would shoot some video and do some run down tests. I do plan to get things setup how they used to be though and then maybe I can do some runs and charts like old times.

[RS_]

well i need to order some new NiZn cells and dig out that old project box and see if i can make it go OU again, I did it before the shop fire destroyed the first model, but the rebuild was lacking, and never quite got there, maybe now......????

[BobZilla]

Yes those are the type I am talking about. Not that specific brand but if I were buying some I would order that too. These things are all coming in from china so brands and lables get switched around a lot but I think in reality their all coming off the same lines anyway.

[RS_]

How about this...?

https://www.amazon.com/melasta-Recha...gateway&sr=8-5

[BobZilla]

careful RS ,, you might be looking at nimh,, I searched what you said and those are not the Nizn cells

[RS_]

well for $26.99 for 16 is not a bad deal. It will take 24 AA battery's to replace all the Ni-Cd's for this old project. And now that I can automate battery swapping, it will take even More... been working on this project for a long while, these battery's may make all the difference....

EBL AA Rechargeable Batteries 2800mAh Ready2Charge Quality AA Batteries - 16 Counts