The Best CHEAP 18650 Spot Welder?

Рет қаралды 163,045

3 жыл бұрын

Is this the most powerful cheap used 18650 spot welder we have tested YET?! * Affiliate Links*
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Пікірлер: 377

@jasoncoronado2158 3 жыл бұрын

You're a God-send, bud! After watching your video and reading all the comments, I have determined that the best combo is the welder (Aliexpress), 8 awg OFC wire for the battery, and a lipo 50c 5200 mah battery. So far, I got up to 40E testing with some decent welds, but might need to go has high as 45 or even 50 before I continue the repair of my li ion pack. I'm using 21700 cells and 0.15 pure nickel strips for the repair. So far so good...

@RodneySolarCircuits 3 жыл бұрын

Thank you, I hope everyone gets to read this. Everyone that brought their experiences and knowledge together for the community. I'll mention it in the next video. I'm glad this welder is working for you as good as it did for me.

@FishFish1995 3 жыл бұрын

I have used basically the same combo (a 50C 5500 LiPo), had to weld 0.2 pure nickel... When I got up to 40 smoke came out. It kept smoking after that and it couldn't weld the 0,2mm with lower than 40-45 anyhow... After the smoke (and know what had already happened), I just turned it up to 50. It didn't weld better than 25 at that point... I just turned it up to 70 after that and it didn't weld at all. No power came out of the welding tips. It's broken now... The thing is I paid 50€ for the LiPo and 25€ for the charger... 20 for the spot welder... 95€ and it doesn't work... I will try replacing the mosfets... These might have been bad...

@RodneySolarCircuits 3 жыл бұрын

@@FishFish1995 sorry to hear that. it happens. Mine is still going strong at 30E welding .15mm. I just completed 6,000 welds with it. if you have to buy another you are still ahead of the $250 for a Kweld. And now you will have extra mosfets.

@RodneySolarCircuits 3 жыл бұрын

@@FishFish1995 cHECK OUT adam welch's video on the repair. I just used mine again this week for a 7s24p battery build.

@zaido2200 2 жыл бұрын

Please shoot me the link

@robertmiles9942 2 жыл бұрын

Imagery of giant piles of 18650 batteries in a house fills me with anxiety. My dad was a firefighter and I grew up on his "interesting experiences" with accelerant-involved house fires

@brieftodo 3 жыл бұрын

KZfaq randomly recommended me your video but I'm thankful it did I never knew that these small spot welders are so cheap. Subbed!

@RodneySolarCircuits 3 жыл бұрын

Thank you. Thats Awesome

@deankq4adj125 3 жыл бұрын

Have watched many videos on this welder, read many reviews and ordered the welder. However, mine too stopped working. Keep up the great reviews, you have been very helpful to me. I know so much more because of your videos.

@RodneySolarCircuits 3 жыл бұрын

Wow, what a motivating comment. Blessed, Thank you.

@deankq4adj125 3 жыл бұрын

@@RodneySolarCircuits keep up the good work my friend!

@Spartacusse 3 жыл бұрын

kzfaq.info/get/bejne/nMqegpOLktnHmnU.html

@BrightBlueJim 3 жыл бұрын

Spot welding requires pressure at the point you want to weld. When you're welding nickel straps to 18650 cells, you do this by pressing down on the strap with the electrodes, and this makes two spot welds at once. And in your tests welding one strap to another strap, you still had something to back them both up, so there was pressure at the weld point, and that also works. But when you tried welding the straps on two LiPo cells, you came at it from both sides, and not directly at each other, resulting in a lack of pressure at the point where the two straps met. When you're welding from two sides, you MUST press the two straps together at one point, that is, the same point on both sides, in order to get pressure holding the two together at that point, which is the only way to get a high current through them.

@edism 3 жыл бұрын

This is exactly what I was thinking. The contact area must be reduced to increase the current flow over a given surface area.

@asepcepot 3 жыл бұрын

Nice review. I tried cheap spot welder weeks ago and burnt my skin, now I wear gloves to avoid another burnt. Using proper safety not a bad idea for me

@oddjobbobb 3 жыл бұрын

It’s nice to see the nickel tear when you test the welds. That tells me that the weld “took.” The first couple at “20” look like they stuck ok, but the ones at “40” and “50” look much better. Maybe the pens need a more rounded point to weld the “pouch cells” you’re holding in your vise.

@Gold63Beast 3 жыл бұрын

Negative cable last, to prevent sparks. Either way. Thanks for the video. Your the best.

@RodneySolarCircuits 3 жыл бұрын

Thank you. Nicest thing ive heard allday!

@treadmillrepair754 2 жыл бұрын

@@RodneySolarCircuits Hi, I bought one of this spot welder, still waiting. I need to solder some wires to an electronics module. Is posible to solder a copper wire to a PCB with this tool? Best Regards.

@RodneySolarCircuits 2 жыл бұрын

@@treadmillrepair754 no, good for nickel strip to batteries. pcb layer is to thin. Soldering is better. Thank you, hope that helps. keep watching other videos.

@treadmillrepair754 2 жыл бұрын

@@RodneySolarCircuits Hi, this module comes with nickel wires from factory, is imposible to solder using 60/40 solder wire due the large heat dissipation capacitity. Anyway Thanks for your help.

@mickgatz214 3 жыл бұрын

Awesome Bro! i'm getting one. :) Greetz from Australia Mick

@SidneyCritic 3 жыл бұрын

Spot welding relies on resistance in the strip to make heat that fuses the strips together. If the strips are too conductive, ie, copper, it won't weld.

@rubensantiago6403 3 жыл бұрын

Buy one on Amazon get it in 2 days works great Awesome video

@2mYgR 3 жыл бұрын

1:50 Tinned copper is copper wire that's coated with with a thin layer of tin. This makes it easier to solder, but more importantly it protects the copper from moisture which can cause resistance in the wire.

@RodneySolarCircuits 3 жыл бұрын

nice!

@markbuxton2368 3 жыл бұрын

thanks, from a guy out here on a budget

@imranbzu5600 3 ай бұрын

Good job good information

@theanonymous9110 3 жыл бұрын

Just use any 12 volt battery and jumper cables with nail in each then touch your metal on top of battery’s and works perfect... I even used a 9v battery with nails in the ends and works fine

@yueibm 3 жыл бұрын

Try holding the tips perpendicular to the surface you're welding. From some of the close up shots, it looks like you're getting very small weld areas. Too much weld energy will burn through the edge of the weld shape and make it weak, too. Thanks for showing me how affordable these can be! I might order one in case I ever rebuild any battery packs.

@travisd8229 3 жыл бұрын

I bought this exact welder. Connected it to a 12v car battery on my work bench. After a little practice, got nearly 1,000 welds then it smoked a MOSFET. Ordered a replacement and it made three welds before smoking a MOSFET. If they work, they're great. but the quality control is out the window.

@RodneySolarCircuits 3 жыл бұрын

I think you are right! mine is still going strong. im using it in my next video now. I have to let it cool down a lil after 8 welds @ 40E

@icebreaka1969 3 жыл бұрын

that welder is pretty good for that price, i am going to oder 1 for myself now. thanks for the video.

@RodneySolarCircuits 3 жыл бұрын

Thank you! What kind of battery are you going to use to power it, People have been having bad experiences using CAR BATTERY. make sure its under 12volts if you do. Or maybe you would like one of the ALL-IN_ONES that I made videos about?

@icebreaka1969 3 жыл бұрын

@@RodneySolarCircuits I am going to use a Car battery, because I work in a autoshop, so I have alot of car battery around here.

@RodneySolarCircuits 3 жыл бұрын

@@icebreaka1969 careful with the voltage. Maybe it will be fine and the handful I have heard from are the minority.

@amazingmother2588 3 жыл бұрын

Just what I wanted to know...nice one,back to ebay.

@DIYwithBatteries 3 жыл бұрын

I love the intro..! 😋👍

@RodneySolarCircuits 3 жыл бұрын

Thanks bro. Thinking of paying someone on Fiverr.com to make a professional intro-outro. I haven't learned blender or other effects yet.

@caddnima 3 жыл бұрын

I just bought this because of your review... got it in 15 days from China.

@RodneySolarCircuits 3 жыл бұрын

That is awesome!!!

@stevemiller2957 3 жыл бұрын

What power source are you using. Plz

@adriantt3468 3 жыл бұрын

Hi The motorcycle battery 12V 12Ah 150A will be suitable for welding ?

@vandal968 3 жыл бұрын

I spotweld 18650's with a big capacitor charged to 35v. It's easy to just charge it to a higher or lower voltage depending on how much heat you want.

@RodneySolarCircuits 3 жыл бұрын

Thats pretty cool. How long does it last per charge?

@vandal968 3 жыл бұрын

@@RodneySolarCircuits One shot per charge, but you just use it connected to a bench supply (only connected to charge, disconnected to fire). So, engage bench supply for 1 sec or so, then off, short terminals to thing you want to weld, and repeat. If too hot, lower volts, too cool, raise volts. I find that 35v seems to work well. Cap is 100kuf 50v.

@RodneySolarCircuits 3 жыл бұрын

@@vandal968 cool

@rodthediver4862 3 жыл бұрын

Mine blew up on the first weld. I cut out the blown Mosfet and now use it as a timer for a starter solenoid welder.

@victorandersson9737 3 жыл бұрын

Interesting! Please tell kore about how you have done that in detail!

@rodthediver4862 3 жыл бұрын

@@victorandersson9737 Mine failed in the 'continuously conduction' mode. You need to cut the traces top and bottom, I used a Dremel cutting wheel, to identify the faulty mosfet. In my case it was next to the capacitor. I then 'destroyed' the mosfet with the dremel and resoldered the traces. Make up new leads from the battery to the red box and output from the red box to the solenoid. These do not need to be particularly heavy duty. Use the supplied red lead to go from the battery to the solenoid and attach the red welding pen to the solenoid output. Joint the two blue leads together and connect to the neg of the battery. For good measure put a flyback diode across the solenoid windings. You will need to use a foot trigger in manual mode. Google solenoid spot welder, the idea is not all mine. I used a car battery and I needed to add some extra cable into the welding circuit to cut the amps down a bit. Good luck.

@doubleas88 3 жыл бұрын

I'm looking to do a couple welds here and there. Mostly just repairing worn out tool batteries and maybe a personal power bank project. Would you consider this little gadget over say a welder made with a recycled microwave transformer? Making one out of a transformer and adding a timer looks pretty simple

@RodneySolarCircuits 3 жыл бұрын

I would say the all-in-one that comes with the battery. It will weld .1mm. for cheap. If you have a a good 12v LiPo battery then this one is the way to go. Im using it now for my Powerwall video.check out my other videos.

@jeremylister89 3 жыл бұрын

From reading various reviews, a good power source that holds the voltage during welding seems key to wether the welder blows up or not. It could be that a battery pack supply works fine fully charged, then when it loses charge, the voltage dips too far when welding and it blows the FETs When I get mine I'll have a good look at the design and see if there are any other modifications that should help reliability (apart from adding the auxiliary supply capacitor).

@RodneySolarCircuits 3 жыл бұрын

I use a 3s SPIM08hp cells. When they get to low 11 volts I recharge it to 12.3v. on the screen of the welder during a weld the voltage will drop by 2-3 volts. so there is a lot of voltage drop that can be seen even with this battery.

@jeremylister89 3 жыл бұрын

@@RodneySolarCircuits 2 to 3V drop is pretty good. I think the crank amps rating of car battery is at 7.2 volts (!)

@RodneySolarCircuits 3 жыл бұрын

@@jeremylister89 REALLY!! Wow. You think the voltage goes too low and shorts the mosfet's gates. When the voltage gets about 3.8v on the all-in-one welder, the mosfets start clicking.

@jeremylister89 3 жыл бұрын

@@RodneySolarCircuits without testing and mosfet datasheet VGS(th) analysis I dont know. But if the MOSFETs come out of saturation with hundreds of amps flowing, they probably won't like it, and may fail depending on their SOA limitations.

@samuelsoto6620 3 жыл бұрын

I found this video... looks like the solution kzfaq.info/get/bejne/nMqegpOLktnHmnU.html

@jeremylister89 3 жыл бұрын

Thanks, just about to buy one! Just one point, the probes seem to have a point contact. The K weld probe tips are more rounded and seem to have slghtly larger contact area. Does it make a difference?

@RodneySolarCircuits 3 жыл бұрын

I have both and I can't tell the difference between welds.

@drecoracing 2 жыл бұрын

My number is 43.. Perfect for 18650

@gazbullen 3 жыл бұрын

@Rodney Solar-Circuits did you try a car battery? i just got one of these welders and used a 12v 7AH rated 45amp for 1 minute which should of been more than enough.but it blew a one of the 1 of the mosfets :( any solution for this or know why ? any help appreciated did you try a car battery? i just got one of these welders and used a 12v 7AH rated 45amp for 1 minute which should of been more than enough.but it blew a one of the 1 of the mosfets :( any solution for this or know why ? any help appreciated

@ri5ux435 3 жыл бұрын

At 14:50 you said you were going to make a 3S battery for 15 amps. 3 in series still gives you 5 amps, 3 in parallel gives you 15 amps. I'm sure you know this, was probably just a mistake.

@PopleBackyardFarm 3 жыл бұрын

pretty interesting

@RodneySolarCircuits 3 жыл бұрын

I thought so too. Being a K-Weld owner I was surprised at the capability.

@mikejf4377 3 жыл бұрын

In other welder video, you showed your tool that you use but have no link for them. I bought the spot welder on your link. Thanks MJ

@RodneySolarCircuits 3 жыл бұрын

Thanks MJ, Glad I could Help!

@ernanisaraiva 3 жыл бұрын

amazing!

@Eagle8800 3 жыл бұрын

Had one of those.. lasted not even a weld before the capacitor decided to be a firework ...

@blakehendrix641 3 жыл бұрын

Looks like a sweet deal! Is there a way to power it by plugging it into to 110v?

@WeAreThePeef 3 жыл бұрын

You'd struggle to find a transformer to get it down to the 12v (and also DC) and also have the amps it needs. A car battery is perfect for it.

@stephenmax9587 3 жыл бұрын

what size battery did you use? do you recommend better welding leads?

@RodneySolarCircuits 3 жыл бұрын

I used a 3s SPIM08HP, 8ah battery. leads are sufficient enough but you could

@ft7397 2 жыл бұрын

What about the pin input

@markpinther9296 3 жыл бұрын

Did you end up making your own leads or did you use the ones that came with it?

@RodneySolarCircuits 3 жыл бұрын

It has worked just fine the way it is. I have new videos where I am using it more. Still going strong

@JAKOB1977 3 жыл бұрын

also have one of these 20 bucks spotwelders.. were like 18 bucks + a couple in shipping. and just use RC LIPO packs..4s even though rated at like 3s. with one 4S i noted the pack got a little hot, so used 2x 4s in parallel and it delivers all the juice I need even with 0.2mm strips.. imgur.com/a/wo4v4Mz also, check it on the scope and the Energy interval adjust was 1 to 1 with one of the measurement variables on the scope... period or width. (ms) but that spot welder will do for my semi-needs.

@RodneySolarCircuits 3 жыл бұрын

I'm using mine to build these huge packs. Placed a little fan next to it and it keeps it cool enough I don't have to stop as much. Im switching between it and kweld.

@solidhit2 3 жыл бұрын

Hello, thank you for your informative video. What about the question you asked yourself at the end of the video. If we take a few 18650 batteries in series (and in parallel to increase current), can we make this thing weld? I would very much like to know, because if we can, I will buy three high discharge LiION 18650 batteries and power this thing with these. I don't like the LiPO technology!

@ausmo1308 3 жыл бұрын

I'm kind of new to all of this but what kind of things are welded lithium batteries good for? I'm trying to fix my hair trimmer but I've had trouble finding someone to bond the batteries for me. I think that's why it won't turn on. But after my trimmer gets fixed I can't see what other things the welder might be good for? Thanks for the upload

@nerdstrangler4804 3 жыл бұрын

Battery packs for things like power tools, cordless vacuums ets.

@levipankey 3 жыл бұрын

What did you use for a power source for the welder? Could I use a lithium tool battery as a power source for it? Like a 12v tool battery just as it is without dismantling the battery and just run leads from the terminals?

@RodneySolarCircuits 3 жыл бұрын

aslong as its 9-12v you could try. good idea. i WILL HAVE TO TRY THAT

@jhamgarces9770 3 жыл бұрын

Great. What will happen if you try to use 4S 65C 1500mah drone battery? Will it damage the spot welder?

@RodneySolarCircuits 3 жыл бұрын

Im gonna have to see what the voltage of the CAPACITOR is. It is prolly 16 volts like other ones. If thats the case then make sure you stay under 16 volts.

@luke040655 3 жыл бұрын

Can you please tell me what gauge wire did you use for the input battery side

@RodneySolarCircuits 3 жыл бұрын

ofc 8ga copper.

@luke040655 3 жыл бұрын

@@RodneySolarCircuits Thank you

@robertsingleton2364 3 жыл бұрын

hey man can this connect to a car 12v battery ? whats the battery you used and connections you didnt say regarding hooking up

@RodneySolarCircuits 3 жыл бұрын

I used spim08hp cells. I would say use a 3s lipo battery. I've heard some blow it up with car battery voltage.

@georgeeden5835 3 жыл бұрын

Out of curiosity could you run this with the 3.7v lipo from the other welder in the last video?

@RodneySolarCircuits 3 жыл бұрын

sure, but thinking about it, it did say 9v-12v. but ill try it.

@hupo 3 жыл бұрын

Mine makes the beeps but nothing happens. Using a proper battery too.

@marcom8229 3 жыл бұрын

Salve mi puoi aiutare volevo sapere la sigla dei mosfet perchè mi sono saltati .Grazie

@AB-ui9xs 3 жыл бұрын

Hey man, do you think one of these cheap spot welders will be good enough to create my own 12s4p battery?

@RodneySolarCircuits 3 жыл бұрын

For sure. The all in one's are good with .1mm nickel strip

@romydeleon8700 3 жыл бұрын

Worst $24 I've spent . . . tried it first time and smoked one of the mosfets. Dismounted the burnt mosfet and then tried again. Will not weld at 30E settings so bumped it to 40E and smoked two other mosfets. And yes, this is with the diode mod recommended in one of the forums.

@RodneySolarCircuits 3 жыл бұрын

That sux. knock off mosfets. Mine is still going strong. just finished 6,500 welds with it. Still cheaper than a K-weld, even if you have to buy 2 for the extra mosfets. I do own a K-weld tho too.

@alanjagroop1282 3 жыл бұрын

Is spot welding the same as cold welding or do they have a difference. Because when i seach spot welding on youtube. They showing me cold welding. Are those to the same. If so could you use this maching to cold weld heavy duty thick metal or something .

@OtherDalfite 3 жыл бұрын

Cold welding is NOT what you've been shown in KZfaq shorts. "Cold welding" is the spontaneous fusing of similar metals due to intermolecular locking. What had been advertised to you as cold welding is actually just really poorly done tig welding. This operates on a similar principle to the crap that's advertised as "cold welding" but these are engineered to actually work correctly with this application. The voltage is far lower and current far higher than normal welding. Standard welding is anywhere from 50vdc and up. This is more like 2-3v max.

@offgridwanabe 3 жыл бұрын

Cool you could increase the voltage to 13.5 and try a test

@RodneySolarCircuits 3 жыл бұрын

maybe

@offgridwanabe 3 жыл бұрын

@@RodneySolarCircuits Well if you can use 12 volt lead acid it is basically dead at 12 volts and nominal is usually around 13.5 but it's not my welder so good luck. Thanks for sharing.

@RodneySolarCircuits 3 жыл бұрын

@@offgridwanabe gotcha. I don't mess with lead acid except for vehicles. So I did not pick up on what you were inferring. Good idea to add to next video! Thanks

@heavystarch100 3 жыл бұрын

Dam it works!🤔😳

@lindanlester 3 жыл бұрын

Can someone who has replaced the FETs on these devices tell me how you removed the old ones. Do they have pins going through the PCB?

@colinmacdougall4301 2 жыл бұрын

No, they’re surface mount devices. But the cost locally for me of the 5 mosfets is higher than buying a new spot welder unit.

@aurelienclair4465 3 жыл бұрын

Which MOS tube I should buy to replace the one which burned ?

@RodneySolarCircuits 3 жыл бұрын

Someone linked it in the comments

@aurelienclair4465 3 жыл бұрын

@@RodneySolarCircuits ty

@BooDamnHoo 3 жыл бұрын

How about auto-type sheet metal?

@RodneySolarCircuits 3 жыл бұрын

No, max i have tried is .2mm pure nickel strip. They have bigger welders for car panels

@jessedelcastillo2248 2 жыл бұрын

I wish you would just get to it

@waynenergy 2 жыл бұрын

I was hoping you explain where did you get the power source from. Not everyone here is expert in this thing. Perhaps most who watch this wanted top learn how to do it. Those who already good at this won't even look at this video

@RodneySolarCircuits 2 жыл бұрын

Noted, Thanks for your help.

@danmitch5085 2 жыл бұрын

@@RodneySolarCircuits that’s what I came here for.

@elguero7185 2 жыл бұрын

Noted but still didnt explain?

@s6a6n6d6m6a6n 3 жыл бұрын

Has anyone used it with a car battery using jumper cables attached to the binding posts under the hood run 12ft to power this device? My car battery is 900cca and wondering if this setup will work.

@RodneySolarCircuits 3 жыл бұрын

Ive seen mixed response with car battery. mostly bad but when it works no-one posts about it. Mine is still working fine. I use it as much as my K-weld.

@JeffMoche 3 жыл бұрын

Sorry for the novice question. Can I use a charger with a 12v 1amp output to power this?

@RodneySolarCircuits 3 жыл бұрын

no, you will need a high (c) rated battery. soo something like 12v 50c-75c, An RC car battery. lipo cells.

@JeffMoche 3 жыл бұрын

@@RodneySolarCircuits Thanks. I found info on how to make one from the transformer out of an old microwave, and even found that piece for sale for only $25. But I'd still have more work to put that together, PLUS the output was like 2000 volts. Not a good idea for someone who doesn't understand electricity ;)

@Sugarkryptonite 3 жыл бұрын

@@RodneySolarCircuits What about a car battery?

@Savagetechdude 3 жыл бұрын

what's up with the second video? I you were just getting to the info I was interested in. Does it work?

@RodneySolarCircuits 3 жыл бұрын

Dang, I have everything to do it with all kinds of different batteries. I started building and filming my super mega powerwall for the house. working so much, dont have time. but it will come.

@MikeXwolf 3 жыл бұрын

What are you powering it from? I am wondering if it can be powered from a home electric socket with a voltage converter

@michaelplus-trojan_dc8687 3 жыл бұрын

High amperage lipo or a car battery. its not the voltage that does it here its the amps

@MikeXwolf 3 жыл бұрын

@@michaelplus-trojan_dc8687 thanks! Never heard of a lipo before. Will have to do some research

@andrew_koala2974 3 жыл бұрын

@@michaelplus-trojan_dc8687 It's the CURRENT ... Amps is only the measurement of Current.

@safdarkhan9824 3 жыл бұрын

From where did you get the power to weld ? You don’t mention that.

@RodneySolarCircuits 3 жыл бұрын

Sorry, link in the description

@notsecure 3 жыл бұрын

Can someone explain the motion of the wires when welding? Do high current on wires cause it to jerk?

@RodneySolarCircuits 3 жыл бұрын

ITs that or the current creates a magnetic field that repels the wires.

@ricolauersdorf687 3 жыл бұрын

Yep. I first have seen this when i used relative thin wires in combination with relative high power speakers.

@nickblacksoul4318 3 жыл бұрын

Interesting I wonder if it could spot-welded car sheet metal

@bmw-e30 3 жыл бұрын

No, only for light metal instant spot welding.

@michaelalfonso8145 3 жыл бұрын

Hi i bought this exact spot welder. How did you manage to minimize spark? My settings was set to 10E but still too much it burnt the cardboard underneath while testing on some tabbing wires.

@RodneySolarCircuits 3 жыл бұрын

It will burn the cardboard everytime. To prevent sparks you need to make sure there are no gaps between the welding tip, tabs and the battery. Make sure you have good contact

@michaelalfonso8145 3 жыл бұрын

@@RodneySolarCircuits i don't think I have gaps between the three. It also now sparks the moment I touch both tips to the tabbing wire instead of beeping first. Thank you, I'll try again, maybe i missed something.

@RodneySolarCircuits 3 жыл бұрын

@@michaelalfonso8145 Sounds like one of the mosfets blew up. take it apart and see.

@RodneySolarCircuits 3 жыл бұрын

I've heard of another one doing the same thing when they used a car battery.

@michaelalfonso8145 3 жыл бұрын

@@RodneySolarCircuits thanks! Will check.

@tvpartscompany8197 3 жыл бұрын

the best cheap 18650 spost

@lindanlester 3 жыл бұрын

Mine let the smoke out first try. Using car boost starter as suggested in one video. I guess this device is very sensitive to input voltage. Must be running on it's limits.

@andrew_koala2974 3 жыл бұрын

Lester Bennett It's the SMOKE that makes the device work. When you let the smoke escape the device will no longer work.

@lindanlester 3 жыл бұрын

@@andrew_koala2974 I've been in electronics for 55 yrs, and I discovered soon after the release of germanium transistors that it was the smoke that made semi-conductors work. I've liberated a lot of smoke over the years.

@stuart8taylor 3 жыл бұрын

On the lowest setting mine vaporised the strip. Then after 5-6 'welds' it blow a transistor. Small 12v automotive battery as power supply

@seb_industries 3 жыл бұрын

Hello, same problem. Did you solve it? Thank's a lot.

@DonDny 3 жыл бұрын

@@seb_industries here is the fix kzfaq.info/get/bejne/nMqegpOLktnHmnU.html&ab_channel=MakerFabio

@earnfreemoney9222 3 жыл бұрын

Can i use that for making bird cage?

@stevenmadsen53 3 жыл бұрын

@FishFish1995 3 жыл бұрын

Could you please test it with pure nickel strips (preferably with 0.2mm ones)

@RodneySolarCircuits 3 жыл бұрын

I know for sure It will weld anything a Kweld will. I built a small pack this weekend with this and it did great.

@FishFish1995 3 жыл бұрын

@@RodneySolarCircuits Thank you for the reply. I guess I will purchase one. I am thinking of using it with a car battery maybe 🤔 Or maybe the LiPo cells you are using... Could you please tell me where did you purchase yours from?

@RodneySolarCircuits 3 жыл бұрын

Its in the description of the video. Link. Battery

@Chris-wz5pn 3 жыл бұрын

@ 4:52 lmao

@RespawnRestricted 3 жыл бұрын

I bought the same one it lasted for two extremely underpowered welds and now all it does is direct short as soon as the two probes touch totally junk

@MarkSt. 3 жыл бұрын

I have the same Welder It it works great! But now I have the same problem, after low voltage the welder make direct shorts without beep. Any solution? Can I repair it? Thanks.

@steveholt480 3 жыл бұрын

I bought one and hooked it up to 12v deep cycle. 20j and 50j were not making strong welds weirdly, so I turned it up to 80, on that one it sparked without the countdown and must have blown it out, because the controls do nothing now. Just sends full battery amps on contact. Bummer.

@RodneySolarCircuits 3 жыл бұрын

dang that sucks, try a smaller lead acid battery like a 12v 8ah. Im gonna make a video using bunch of different batteries soon.

@dga5396 3 жыл бұрын

This is exactly the same results i got with mine. AS soon as you touch the metal strip it sparks. I think it is a Automatic setting, anyone know how to set it on automatic. No instructions with mine at all.

@RodneySolarCircuits 3 жыл бұрын

@@dga5396 The first time it sparked fast, I mentioned it in my last video different welder. The first weld was fast but the 2nd was regular. I wish the people that had good experiences would post. it seems like only bad reviews. Mine still works fine. If I didnt have so many for review I would buy another for back up.

@_DixonCider 2 жыл бұрын

I think the pouch tabs are designed to be soldered, I've never seen them spot welded.

@meffken 2 жыл бұрын

used a lead-acid battery to power it and it blew up a mosfet on the first try.... maybe the cheap way istnt always the best...

@RodneySolarCircuits 2 жыл бұрын

Dang!

@florinbucur3852 2 жыл бұрын

Hi! Can somebody tell me what kind (type) of Moffett use this welder? Because I just burned one, at the very first weld...

@RodneySolarCircuits 2 жыл бұрын

someone has it posted in the comments. I can go look if you respond back

@RodneySolarCircuits 2 жыл бұрын

or i think i have seen it in other videos

@dga5396 3 жыл бұрын

How do you get the unit to Auto mode, mine sparks as soon as i touch the probes to the metal. No instructions with mine.

@RodneySolarCircuits 3 жыл бұрын

I think it is the button on the right. but you will need a foot pedal or switch.

@dga5396 3 жыл бұрын

@@RodneySolarCircuits Thanks for responding, mine switches but apparently the auto doesn't work, it sparks as soon as i place it on the metal strip. Thanks again

@ghffrsfygdhfjkjiysdz 3 жыл бұрын

@@dga5396 Sounds like one of your mosfets is dead. with welder off, do a continuity check across bank of mosfets. If you have continuity one of the mosfets is confirmed dead.

@BillyBob-fd5ht 3 жыл бұрын

it does not have protection All you need is a 470-1000uF 16V(or higher) capacitor another site show you how to install it

@jimbean8413 3 жыл бұрын

Mod before using for first time kzfaq.info/get/bejne/nMqegpOLktnHmnU.html

@stevenman5124 2 жыл бұрын

u can spot weld up to 0.3mm pure nickel strip or double stack 0.2mm pure nickel strip like nothing. Any cheap Chinese spot welder( at least 5 mosfet) will work. People just don’t know how to use it!

@belomaker6550 Жыл бұрын

So how to use it ?

@lazal3m 3 жыл бұрын

Hey! How can spot welding cause an 18650 to leak out like a small firework? I'm looking to buy this model after my last accident.

@RodneySolarCircuits 3 жыл бұрын

If the welder is set to high/hot it can melt a hole through the cell. I have had it happen too.

@lazal3m 3 жыл бұрын

@@RodneySolarCircuits Would the following also cause that problem: Too much downward force on the copper tips Fully charged battery Duration of spot weld activation time

@RodneySolarCircuits 3 жыл бұрын

@@lazal3m duration of weld would. NOT enough force on the tips. If there is a gap it will jump the gap like a spark plug and could blow a hole.

@lazal3m 3 жыл бұрын

@@RodneySolarCircuits Thanks! What would you recommend would be the best energy setting for this?

@RodneySolarCircuits 3 жыл бұрын

@@lazal3m between 20 and 30 depending on the thickness of your nickel strip

@clive4500 3 жыл бұрын

the second spot weld it did 2 MOSFETs Caught fire. I was using 3 cel lithium battery 80c. even the instructions that were supplied says that the internal resistance the MOSFETs can vary and this can cause them to destroy themselves I will get my money back on eBay. if they are prone to fail this often perhaps they should supply extra MOSFETs. For me it's a complete waste of time

@flanikent 2 жыл бұрын

Have you tryed this welder with .2mm

@RodneySolarCircuits 2 жыл бұрын

Yes, Couldnt get it to stick but you could double up on .01 or .015. you could just keep stacking it.

@flanikent 2 жыл бұрын

@@RodneySolarCircuits Thank You I just ended up buying a sunko

@jbuccaran 3 жыл бұрын

Mine died after 2 crappy welds..

@ChillBing 2 жыл бұрын

Dude send me some of those lithium cells(:

@Dingomush 3 жыл бұрын

Looks pretty good, but I’ll stick with my microwave transformer build. It’s been doing good for several years now. No problems.

@alexstone691 3 жыл бұрын

Are you using the microwave transformer directly or is there more circuitry?

@Dingomush 3 жыл бұрын

@@alexstone691: I took out the secondary coil and replaced it with an old jumper cable. I soldered two grounding lugs on the ends and have copper rod extending out of that. As far as controlling it, I just have a momentary push button switch rated for 250v AC secured to one of the welding leads that controls the input power to the transformer. Set the two leads on, tap the switch, done. I stick together a lot more things than batteries so I didn’t want to build it for just one purpose. It’s simple, and it works.🤠

@bradhabit2217 3 жыл бұрын

@@Dingomush ala TKOR (King of Random) style build? R.I.P. Grant 🥺

@Dingomush 3 жыл бұрын

@@bradhabit2217: I will have to look and see. I really didn’t get into KZfaq until fairly recently. I’m just an old tinker gnome and work things out “on the fly” so to speak! lol

@bradhabit2217 3 жыл бұрын

@@Dingomush I'm right there with you on the age and tinkerer deal. The video I'm talking about and the build that I made. I use some roof flashing and made a solder pot but I've never used one on an 18650, because I'm scared, lol.

@Ardyen317 3 жыл бұрын

Bought one of these on eBay. It lasted for about 6 cycles trying to set the power. Then the circuit board flashed a nice fireball, and it was toast. Do not waste your time or money.

@stuart8taylor 3 жыл бұрын

Same. They asked me to send photos in use, so I took a video. Actually captured the moment it blew.

@10OZDuster 3 жыл бұрын

same exact thing happened to mine it burned the MOSFET after few cycles...piece of junk

@DonDny 3 жыл бұрын

@@stuart8taylor easy fix kzfaq.info/get/bejne/nMqegpOLktnHmnU.html&ab_channel=MakerFabio

@cr25094 3 жыл бұрын

Could I use an 18v Makita battery to power this??

@VinnieVega76 2 жыл бұрын

I'd like to know as well 🤘

@user-sh9sk1ic9y Жыл бұрын

No its 12 volt

@galaxyb1103 3 жыл бұрын

Hi I have one of these that beeps but never welds, no sparks, nothing Seems to turn on ok and makes all the same noises as yours, it just doesn't send any current.

@RodneySolarCircuits 3 жыл бұрын

LOW voltage on the battery( I try to keep it above 11v but closer to 12v, lose connection, or might have a blown mosfet. There are some good videos out there about it. Im sure you already found them by now.

@galaxyb1103 3 жыл бұрын

@@RodneySolarCircuits thanks for the reply. Not much that can go wrong for loose connections because it gets 12.6v from battery so the display is constantly on, and also it beeps when it touches metal which mean the other 2 wires are also making good contact, not sure about mosfets, it's weird all would be broken, the device is brand spanking new, never had a single weld... because it doesn't weld at all. Using a good 12v car battery with 200cca tested on a battery tester.

@RodneySolarCircuits 3 жыл бұрын

@@galaxyb1103 Definetly look at the repair videos of it, it will give you a better knowing of what is going on. sounds like the timer is working but no power going to the tips or maybe not enough. Adam Welch has a good video

@galaxyb1103 3 жыл бұрын

@@RodneySolarCircuits it eventually broke on me.. did manage to weld a spot then burned a mosfet, removed faulty mosfet, ran another weld, burned a second mosfet. Just didn't work for me. Used a fully charged car battery and the darn thing still failde, btw it's the new revised version where you don't need to add a capacitor.

@RodneySolarCircuits 3 жыл бұрын

@@galaxyb1103 i haven't heard of good things when using a car battery. Read the comments and you will notice. Mine is still working great. Used it to WWLD in my more recent videos alot

@uawsux 2 жыл бұрын

I would like to know the failure percentage the failure rate of the spot welders I bought two of them was just under $17 each both were failures they werenew I got a refund.... but I just wanted to know what the failure rate and there are many many different versions of the same spot while they're all over the Internet varying from $8 all the way up to $80 maybe it's just a different mosfets or something but mine had a bad switch I think I don't know it just started firing right off the bat it didn't even give me the beeps and the other one smoked I had 6s 12 volts so I would like to know the people that have had these a lot of people who like them really like them and a lot of people who say they're junk really say they're junk and some people make modifications I would like to know exactly what's going on with these little welders

@FishFish1995 3 жыл бұрын

I need you to confirm something... Were these strips pure nickel or nickel plated steel? 🥺

@RodneySolarCircuits 3 жыл бұрын

I just used my phone/google translate and the package of the .1x8mm says nickel plated. the .15x8mm says pure nickel.

@Traderhood 3 жыл бұрын

Mine does nothing even at 99 setting.

@wantafastz28 3 жыл бұрын

Is there anywhere that can ship this as quick as yours? all available ones are 2 months out on ebay.

@RodneySolarCircuits 3 жыл бұрын

I seen some on amazon. little more expensive, not to bad.

@wantafastz28 3 жыл бұрын

@@RodneySolarCircuits they also book out until october or November.:(

@RodneySolarCircuits 3 жыл бұрын

@@wantafastz28 I think it said a month, But it only took 15 days.

@RodneySolarCircuits 3 жыл бұрын

I found this one on ebay for $36 and it ships from US. searched: (spot welder) and it was about half way down

@wantafastz28 3 жыл бұрын

@@RodneySolarCircuits I ordered one yesterday, should be here this week. :)

@gkitch6755 3 жыл бұрын

Can you recommend any spot welders for 2mm nickel . Keep up the vids

@RodneySolarCircuits 3 жыл бұрын

This one will do it for sure. I have tried up to .3mm. This thing has power with the right battery.

@gkitch6755 3 жыл бұрын

@@RodneySolarCircuits thanks for reply how many welds roughly before having to let pcb cool down . I take weld quality changes as it gets warm?

@RodneySolarCircuits 3 жыл бұрын

@@gkitch6755 for .2mm prolly have to have it set to 30-45ish and even my Kweld gets to hot while I was building a 7s8p pack. Mainly the welding pins got to hot to hold. So about halfway through it I had to let it cool down. 2 welds per end.

@andronicuscomnenus2642 3 жыл бұрын

Just finished modding and testing my spot welder. Only made about 10 welds for far, but it's working great! I'm confident it will last a very long time. You can see details here... imgur.com/a/NT6eLsk

@caddnima 3 жыл бұрын

Just noticed another video that did not work for him... But I noticed that he does the positive first and then negative, and it blew. I noticed that you touch it with negative first the positive. Do you think there is a difference? Since the electronics are controlling the negative side and positive is just straight through

@Dansk55 3 жыл бұрын

I think applying ground (negative first) helps in just about everything when working with electricity. This is probably why switches go to the positive as negative is always connected. Don't know, just my hypothesis.