Search found 2711 matches

by ElectricGod
Oct 11 2019 10:50am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: KWeld modding

tore off the resistor at R31. Looking at the other board it is labeled 657 or 650,000,000 ohms or 650 meg ohms, but that seems unlikely. Murphy got you, because that's a 6k57 0.1% precision resistor, which you most likely don't have in your drawer :-) That's part of the internal voltage reference g...
by ElectricGod
Oct 11 2019 1:19am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

KWeld modding

Both my super cap modules have conformal on the small electronics now and I added balance leads to them. This is the second module. Sure enough they are all pretty close to the same voltage. So far after quite a lot of spot welding, the caps have worked fine at 9.44ish volts on both boards. https://...
by ElectricGod
Oct 10 2019 9:43pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 762
Views: 65520

Re: Nucular electronics - complete kit for ev! [beta]

I tried using a phone to post and end up with a double post. I don't know phone lovers handle the tiny screens and horrendous keyboards. 1st and last time I connect here by phone ends in this edit by PC, since too late to delete. Upper right corner of the post, see the X? That's delete. Once you se...
by ElectricGod
Oct 10 2019 5:16am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 762
Views: 65520

Re: Nucular electronics - complete kit for ev! [beta]

PITMIX wrote:
Oct 08 2019 11:26pm
Yes that fits well with the Nucular spirit. It was ironic after the ElectricGod message.
What did I say that was ironic?

I like Nucular products. I have bought everything they make just as soon as they were available.
by ElectricGod
Oct 10 2019 5:14am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 762
Views: 65520

Re: Nucular electronics - complete kit for ev! [beta]

I tried using a phone to post and end up with a double post. I don't know phone lovers handle the tiny screens and horrendous keyboards. 1st and last time I connect here by phone ends in this edit by PC, since too late to delete. Upper right corner of the post, see the X? That's delete. Once you se...
by ElectricGod
Oct 10 2019 5:13am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 762
Views: 65520

Re: Nucular electronics - complete kit for ev! [beta]

So, if I understand correctly, some smart guys want to pay in advance to get ahead of others ... :roll: As far as I know, you pay when your order is about ready to ship. I tried to pay in advance, though not to speed things up, and was told no. Nucular has chosen a route quite different from Adaptt...
by ElectricGod
Oct 10 2019 3:18am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld -

BBQ gloves, can handle live coals Sure...if you don't mind wearing bulky gloves while doing fine motor skill work. The welding probes get bloody hot after a steady bit of spot welding. The higher the joule setting the hotter they get quicker. Give it a bit and you can't hold the probes anymore, hav...
by ElectricGod
Oct 09 2019 5:28pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

As a side measure, something that I have assumed is that all the caps are charging to the same voltage and actually balancing. I don't really know if that's true or not. The module does balancing, but it does it in a way that it equalizes the voltages across the capacitors (within a few ten millivo...
by ElectricGod
Oct 08 2019 11:51pm
Forum: Battery Technology
Topic: My excellent adventure through some battery builds
Replies: 176
Views: 24950

Tripple 20S3P pack build

The 3 sub packs are a smidge tighter than the box allows for. My mockup was clearly a little smaller than the final product. I need to still enclose all 3 sub packs into 1 large pack and it already won't fit the box. I'll need to take down those threaded blocks a good bit so I have width and length ...
by ElectricGod
Oct 08 2019 11:13pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

can you make a model of those handles so they can be 3d printed? i got some high temp filament i would like to try on this application. I'll post my results after I try out some things, but I may have a much simpler idea that anybody can do. I have multiple layers of heat shrink on mine and that do...
by ElectricGod
Oct 08 2019 1:57pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

Last night I was redoing welds on 3 20S3P packs that I had done with my Sunnko welder. The KWeld does a far better job! I have yet to parallel the second super cap board. For now since my welds are into .02mm nickel, I don't really need the power a second board will offer. Later...well that's anothe...
by ElectricGod
Oct 08 2019 1:11pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 762
Views: 65520

Re: Nucular electronics - complete kit for ev! [beta]

j bjork wrote:
Oct 08 2019 12:06am
To both John in CR and Electric God, when did you get on the waiting list?
I've been "on the list" since the first announcement of the 24 fet controller.

I emailed Vasily directly that I wanted 3 controllers.

However, I also added myself to the web based list back when it was announced here.
by ElectricGod
Oct 07 2019 11:05pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 762
Views: 65520

Re: Nucular electronics - complete kit for ev! [beta]

Just paid for 3 controllers...
I guess they will get here pretty quickly based on what others have said.
by ElectricGod
Oct 07 2019 11:03pm
Forum: Battery Technology
Topic: My excellent adventure through some battery builds
Replies: 176
Views: 24950

Re: My excellent adventure through some battery builds

Interesting didn't realize the venting mech and how they fail differed. I like the idea of sub packs for my scooter frame I can slot them down a long bit of box section and only have a small opening like stuffing lipos in rather than all at once allows me to create a real clean design. Wish I was l...
by ElectricGod
Oct 07 2019 2:14pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

Perspective is everything...

Not risk adverse:
Colin Furze...
https://www.youtube.com/watch?v=s4QBhNkaAk8
https://www.youtube.com/watch?v=LDM9aXVAoOw

Risk adverse:
Sloooooooow drivers...
https://www.youtube.com/watch?v=hnml1rxiyIw

Guess which one applies to me?
by ElectricGod
Oct 07 2019 1:13pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

I've put lots of stuff in series and they work OK. That approach would be suitable for stuff that is not potentially dangerous like ultracaps or Lipos, but in this case I have to raise the :warn: :warn: flag again and strongly discourage from doing this. Please don't treat this as an offense toward...
by ElectricGod
Oct 07 2019 11:52am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

Hey ElectricGod, Just one additional reminder or warning. These Maxwell Supercaps contain as you know some nasty chemicals. What you might not know is, if you overheat the Cap to arount 150°C there is cyanid created in the Supercap. I don't think that you want to have cyanid in your house so I woul...
by ElectricGod
Oct 07 2019 11:30am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

I'm not sure where I saw people running from a car battery or 3S lipo through the super cap module. Going back through all the pages and skimming through this thread, I didn't see what I remembered. It could have been in youtube videos. What I saw was to run them at higher voltage...AND even then......
by ElectricGod
Oct 07 2019 11:26am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 762
Views: 65520

Re: Nucular electronics - complete kit for ev! [beta]

Order in the queue... I think it depends on who pays first. The pre-order thing is nice, but it's not proof of commitment. Commitment is actual payment for what you say you want to buy. Those people will get controllers first. IMHO, the pre-order thing is about gauging interest. Then it is used to r...
by ElectricGod
Oct 07 2019 10:52am
Forum: Battery Technology
Topic: My excellent adventure through some battery builds
Replies: 176
Views: 24950

Re: My excellent adventure through some battery builds

To foam then kapton or kapton then foam that is the question. Seen it both ways, I think kapton first would need some thick stuff durable I'm thinking of any moisture left in foam causing condensation with heat and cold of cycling, top work though those cells are nicely bunched. Soon as I saw the m...
by ElectricGod
Oct 05 2019 12:21am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Heavy welds

Since I have been making changes, it was time to re-calibrate. I thought I'd see what happens on a lot higher power settings with thicker metal This is .02mm nickel welded to .6mm steel. I didn't realize until I was done that I was cooking my bench top too. You can't really see the underside of the ...
by ElectricGod
Oct 04 2019 11:30pm
Forum: Battery Technology
Topic: My excellent adventure through some battery builds
Replies: 176
Views: 24950

20S3P times 3 pack build

By comparison the Sunnko 788H is a garbage. Even with better welding pens it's still nothing close to the KWeld. When I took apart the above pack, I found that a couple of the welds from the Sunnko had not adhered very well and were breaking loose. The KWeld, set to a reasonably high joule level wil...
by ElectricGod
Oct 04 2019 10:39pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

This mod tightened things up a lot. There's still enough room in there so I can get my fingers around the bullets to push them together or pull them apart. I'll do something like it for the second super cap board when I put it in parallel. Snug everything together as much as possible and yet make it...
by ElectricGod
Oct 04 2019 9:49pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 762
Views: 65520

Re: Nucular electronics - complete kit for ev! [beta]

I'm about to have an invoice for 3 of the 24 fet controllers! Can't wait! 1 will go to a friend in San Francisco to run his Revolt RV-160-SH after I finish rewinding it. 2 will go to me...just to mess with and probably to run a hubmonster at 82v. Soon after the 12 fets were available, I bought 2 of ...
by ElectricGod
Oct 04 2019 10:18am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 857
Views: 100367

Re: kWeld - "Next level" DIY battery spot welder

why not simplfy the whole setup and use a HRP-300-7.5? no need for resistors or whatever, just straight into the caps The SE series shut off if you over load them. Is that what you mean by "current limiting"? OR does the HRP series actually cap current and keep on running? Regardless of that fact, ...