The Best CHEAP 18650 Spot Welder?
Вставка
- Опубліковано 4 жов 2024
- Is this the most powerful cheap used 18650 spot welder we have tested YET?! * Affiliate Links*
BATTERY HOOK UP discount code (Rodney) for 5% off www.batteryhoo... RED WELDER amzn.to/2WnpKgU
www.ebay.com/i... Supply%2F114451854212%3Fhash%3Ditem1aa5dcb384%3Ag%3AmS0AAOSwmNFfgAG4&campid=5338734310&toolid=10001&customid=
8ga wire amzn.to/2GYavmI
BATTERY HOOK UP discount code (Rodney) for 5% off www.batteryhoo... WELDER Amazon amzn.to/31nFws2
NICKEL STRIP amzn.to/2Yv5CaI
big nickel strip amzn.to/3jnIfYL
ALL-in ONE welder amzn.to/3j3pREe
side cutters amzn.to/3aQnT7i
amzn.to/31rvfuR
pure nickel strip .15x8mm amzn.to/2Ez46go
3s LiPo battery amzn.to/3jmUkNP
3s Lipo battery amzn.to/31ZdaEI
12 ga ofc burial wire sale amzn.to/33uv6H0
Lipo Charger SALE $35 amzn.to/3k4PQfi
Good Inverter amzn.to/3jeBAji
Cell holders Best deal amzn.to/2FZqikx
Whole house Inverter rover.ebay.com...
used solar panels rover.ebay.com...
As an Amazon Associate I earn from qualifying purchases.
As a Battery Hookup affiliate I earn from some purchases made through links on this page.
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...
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.
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...
@@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.
@@FishFish1995 cHECK OUT adam welch's video on the repair. I just used mine again this week for a 7s24p battery build.
Please shoot me the link
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.
This is exactly what I was thinking. The contact area must be reduced to increase the current flow over a given surface area.
Negative cable last, to prevent sparks. Either way. Thanks for the video. Your the best.
Thank you. Nicest thing ive heard allday!
@@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.
@@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.
@@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.
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
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.
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.
nice!
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.
Wow, what a motivating comment. Blessed, Thank you.
@@RodneySolarCircuits keep up the good work my friend!
ua-cam.com/video/fdnO0Z-scjA/v-deo.html
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
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.
Interesting! Please tell kore about how you have done that in detail!
@@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.
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.
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
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
Noted, Thanks for your help.
@@RodneySolarCircuits that’s what I came here for.
Noted but still didnt explain?
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).
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.
@@RodneySolarCircuits 2 to 3V drop is pretty good. I think the crank amps rating of car battery is at 7.2 volts (!)
@@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.
@@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.
I found this video... looks like the solution ua-cam.com/video/fdnO0Z-scjA/v-deo.html
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.
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.
Thats pretty cool. How long does it last per charge?
@@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.
@@vandal968 cool
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.
I just bought this because of your review... got it in 15 days from China.
That is awesome!!!
thanks, from a guy out here on a budget
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
UA-cam randomly recommended me your video but I'm thankful it did I never knew that these small spot welders are so cheap. Subbed!
Thank you. Thats Awesome
that welder is pretty good for that price, i am going to oder 1 for myself now. thanks for the video.
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?
@@RodneySolarCircuits I am going to use a Car battery, because I work in a autoshop, so I have alot of car battery around here.
@@icebreaka1969 careful with the voltage. Maybe it will be fine and the handful I have heard from are the minority.
I wish you would just get to it
Buy one on Amazon get it in 2 days works great Awesome video
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...
Dang!
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.
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
Thanks MJ, Glad I could Help!
Had one of those.. lasted not even a weld before the capacitor decided to be a firework ...
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
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.
Man if you have so much time then don't waste others time
Hi The motorcycle battery 12V 12Ah 150A will be suitable for welding ?
Cool you could increase the voltage to 13.5 and try a test
maybe
@@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.
@@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
What power source are you using. Plz
Awesome Bro! i'm getting one. :)
Greetz from Australia
Mick
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!
So how to use it ?
My number is 43.. Perfect for 18650
Could you please test it with pure nickel strips (preferably with 0.2mm ones)
I know for sure It will weld anything a Kweld will. I built a small pack this weekend with this and it did great.
@@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?
Its in the description of the video. Link. Battery
Have you tryed this welder with .2mm
Yes, Couldnt get it to stick but you could double up on .01 or .015. you could just keep stacking it.
@@RodneySolarCircuits Thank You I just ended up buying a sunko
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
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.
it does not have protection All you need is a 470-1000uF 16V(or higher) capacitor another site show you how to install it
Looks like a sweet deal! Is there a way to power it by plugging it into to 110v?
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.
I love the intro..! 😋👍
Thanks bro. Thinking of paying someone on Fiverr.com to make a professional intro-outro. I haven't learned blender or other effects yet.
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.
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.
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.
dang that sucks, try a smaller lead acid battery like a 12v 8ah. Im gonna make a video using bunch of different batteries soon.
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.
@@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.
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.
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.
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!
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.
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.
@@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.
@@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
@@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.
@@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
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.
Same. They asked me to send photos in use, so I took a video. Actually captured the moment it blew.
same exact thing happened to mine it burned the MOSFET after few cycles...piece of junk
@@stuart8taylor easy fix ua-cam.com/video/fdnO0Z-scjA/v-deo.html&ab_channel=MakerFabio
I think the pouch tabs are designed to be soldered, I've never seen them spot welded.
Out of curiosity could you run this with the 3.7v lipo from the other welder in the last video?
sure, but thinking about it, it did say 9v-12v. but ill try it.
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?
I have both and I can't tell the difference between welds.
From where did you get the power to weld ? You don’t mention that.
Sorry, link in the description
Mine makes the beeps but nothing happens. Using a proper battery too.
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.
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.
Looks pretty good, but I’ll stick with my microwave transformer build. It’s been doing good for several years now. No problems.
Are you using the microwave transformer directly or is there more circuitry?
@@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.🤠
@@Dingomush ala TKOR (King of Random) style build?
R.I.P. Grant 🥺
@@bradhabit2217: I will have to look and see. I really didn’t get into UA-cam until fairly recently. I’m just an old tinker gnome and work things out “on the fly” so to speak! lol
@@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.
Good job good information
Mine died after 2 crappy welds..
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 .
Cold welding is NOT what you've been shown in UA-cam 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.
Just what I wanted to know...nice one,back to ebay.
On the lowest setting mine vaporised the strip. Then after 5-6 'welds' it blow a transistor. Small 12v automotive battery as power supply
Hello, same problem. Did you solve it? Thank's a lot.
@@seb_industries here is the fix ua-cam.com/video/fdnO0Z-scjA/v-deo.html&ab_channel=MakerFabio
Great. What will happen if you try to use 4S 65C 1500mah drone battery? Will it damage the spot welder?
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.
Battery Rating: 60C x 5200mah = 312 amps (Max discharge Rate). System is setup with 5(300A) Mos Tubes. In theory, Tubes in parallel should be able to handle 1500A. Whats the Max discharge rate of a car battery? In-balance in any of the tubes could cause a tube failure with a car battery. If the tubes were in series you would be limited to a 300 amp discharge rate from the tubes, thus using a car battery is out of the question. I've not seen the circuit, just theorizing potential failures. I believe the current, not voltage, to be the cause of the tube failures. Just throwing this out there.
Maybe. I cant remember if I found the data sheet for the tubes. but I guess if you try and pull too much thru a tube and it cant be smart and save it self like a good inverter. but I use 3 spim08hp cells, continuous of 200amps each and pulse of 400a for 3 seconds. It says 9v-12v on the welder. so 13-14 volts might be to much after it warms up. The comments say they blow up after 10 or so welds.
@@RodneySolarCircuits That's a shame. What was your experience with the number of welds? Did you get more than 10? I thought you got more than 10 just doing the video. Could it be, the ones that did only 10 welds were doing it with a car battery?
@@user-kx4dj5ee3o Yea I never used lead acid, they were using lead acid fully charged.
Well I just bought this and 2 of the 5 MOSFETs on the board blew up and shorted. I had it on setting 20 🤷🏿♂️
@@gregala84 car battery?
what size battery did you use? do you recommend better welding leads?
I used a 3s SPIM08HP, 8ah battery. leads are sufficient enough but you could
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.
Lester Bennett
It's the SMOKE that makes the device work.
When you let the smoke escape the device will no longer work.
@@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.
What about the pin input
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?
aslong as its 9-12v you could try. good idea. i WILL HAVE TO TRY THAT
Salve mi puoi aiutare volevo sapere la sigla dei mosfet perchè mi sono saltati .Grazie
Sorry for the novice question. Can I use a charger with a 12v 1amp output to power this?
no, you will need a high (c) rated battery. soo something like 12v 50c-75c, An RC car battery. lipo cells.
@@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 ;)
@@RodneySolarCircuits What about a car battery?
Can you please tell me what gauge wire did you use for the input battery side
ofc 8ga copper.
@@RodneySolarCircuits Thank you
Interesting I wonder if it could spot-welded car sheet metal
No, only for light metal instant spot welding.
what's up with the second video? I you were just getting to the info I was interested in. Does it work?
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.
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
Battery packs for things like power tools, cordless vacuums ets.
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?
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.
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.
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
@@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.
@@michaelalfonso8145 Sounds like one of the mosfets blew up. take it apart and see.
I've heard of another one doing the same thing when they used a car battery.
@@RodneySolarCircuits thanks! Will check.
Did you end up making your own leads or did you use the ones that came with it?
It has worked just fine the way it is. I have new videos where I am using it more. Still going strong
Could you try using 0.2mm nickel strip would be interesting
I have no doubt that this set up will do .2mm. I even have .3mm I could try.
@@RodneySolarCircuits I wonder if this could be a kweld replacement for under 100 dollars?
@@willkim9134 Yes, as far as 18650 builds. I built a small battery with this the other day. instead of getting my Kweld out. This is way more compact and has the power. If You upgrade the wires to OFC it would be even better. I tried to use the Kweld on the LiPo tabs and it would not work either. .
@@RodneySolarCircuits what wire size would be good upgrade?
@@willkim9134 8ga OFC copper, it comes with 10ga but its CCA copper tin. even a good 10ga would be better.
Yer pressing too hard. light press = more resistance = more heat = stronger weld
@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
Hi! Can somebody tell me what kind (type) of Moffett use this welder? Because I just burned one, at the very first weld...
someone has it posted in the comments. I can go look if you respond back
or i think i have seen it in other videos
Hey man, do you think one of these cheap spot welders will be good enough to create my own 12s4p battery?
For sure. The all in one's are good with .1mm nickel strip
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
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.
If the welder is set to high/hot it can melt a hole through the cell. I have had it happen too.
@@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
@@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.
@@RodneySolarCircuits Thanks! What would you recommend would be the best energy setting for this?
@@lazal3m between 20 and 30 depending on the thickness of your nickel strip
pretty interesting
I thought so too. Being a K-Weld owner I was surprised at the capability.
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
How about auto-type sheet metal?
No, max i have tried is .2mm pure nickel strip. They have bigger welders for car panels
hey man can this connect to a car 12v battery ? whats the battery you used and connections you didnt say regarding hooking up
I used spim08hp cells. I would say use a 3s lipo battery. I've heard some blow it up with car battery voltage.
Which MOS tube I should buy to replace the one which burned ?
Someone linked it in the comments
@@RodneySolarCircuits ty
I need you to confirm something... Were these strips pure nickel or nickel plated steel? 🥺
I just used my phone/google translate and the package of the .1x8mm says nickel plated. the .15x8mm says pure nickel.
Dude send me some of those lithium cells(:
There was no comparison, only single spot welder. Do we have to take your word that it is the best cheap spot welder amongst many other cheap spot welders ?
You can see for yourself in the video. I still use it to this day. just made a battery pack for my Dewalt drill yesterday and used this set up. works great and is much easier to use portable than my K-weld.
What are you powering it from? I am wondering if it can be powered from a home electric socket with a voltage converter
High amperage lipo or a car battery. its not the voltage that does it here its the amps
@@michaelplus-trojan_dc8687 thanks! Never heard of a lipo before. Will have to do some research
@@michaelplus-trojan_dc8687
It's the CURRENT ... Amps is only the measurement of Current.
the best cheap 18650 spost
Can someone explain the motion of the wires when welding? Do high current on wires cause it to jerk?
ITs that or the current creates a magnetic field that repels the wires.
Yep. I first have seen this when i used relative thin wires in combination with relative high power speakers.
Can you recommend any spot welders for 2mm nickel .
Keep up the vids
This one will do it for sure. I have tried up to .3mm. This thing has power with the right battery.
@@RodneySolarCircuits thanks for reply how many welds roughly before having to let pcb cool down .
I take weld quality changes as it gets warm?
@@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.
WHAT ABOUT JUST USING A 12V CAR BATTERY AS A SOURCE ?? TOO POWERFUL ??
Check out some other videos about repairing or upgrading it. Mine still works fine with my setup. but others have had problems with car batteries. Thanks for your comments and watching.
@@RodneySolarCircuits Or what about a dewalt battery and one of those 12v to x40 adapters?
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
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.
Could I use an 18v Makita battery to power this??
I'd like to know as well 🤘
No its 12 volt
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.
I think it is the button on the right. but you will need a foot pedal or switch.
@@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
@@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.
You can’t weld 2 dissimilar metals. Only under a roll welder it can be done😁
nickel strip to steel can battery? Is nickel special that way?
Mine does nothing even at 99 setting.
you're not supposed to take it to 50 you'll burn up the mosfet
I took a chance on one of these after three unsuccessful tries with another design. My first try went fine, but not enough current. I turned it up from setting 10 to 20, and this time, the board caught fire. THIS THING SUCKS!
Wow
Nope, the battery you were using sucks. ua-cam.com/video/fdnO0Z-scjA/v-deo.html
@@Spartacusse if you have to modify it before use, it sucks. This one worked out of the box without modification. www.amazon.com/dp/B08DQS25FH/ref=cm_sw_r_cp_apa_fabc_KIf1Fb8FXC141?_encoding=UTF8&psc=1
@@AM-ty9lp But...that costs $70, and all you need to fix this one is to solder a $1 capacitor to it...
@@geometerfpv2804 I'd rather pay more for something I don't have to fix before use. It's like buying a car with no oil in the engine - simple fix, but big problems if you try to start it.