Budget Amazon 18650 Battery Spot Welder by SeeSii Review

Let's take a look at a budget Amazon portable spot welder made by SeeSii. In this video I'll give you a quick tour of the device and will spot weld a couple of 21700's for an RC Plane.

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[AtomicElectronCo]

I just got this identical item (I think it comes from the same manufacturer but is cheaper and listed as a no label product) and I could not get it to work.
I have used a soldering iron forever so I took these nickel strips and pressed both electrodes and thppt! Nothing. Barely heated it up. After seeing your vid and a bit of thinking seems I can use one probe to hold the strip down on the battery and the other probe (where I want the weld) I only GENTLY touch. BOOM! That does the trick. After time the learning curve in this method starts to come more and more. A very useful tool for future projects! Thanks!

[ensidfkgnur]

Thanks for the review! I can't believe the comments aren't filled with "you need to press MORE gently!" Thanks!

[saraheart]

You did a great job of both demoing the product, and showing how to make low resistance, high reliability connections.

[NorthRC]

With all the portable stuff one could carry around from the portaable charging station, to a portable soldering pen, portable spot welder, etc, one will need a portable desk to hold it all.

[HindsightFPV]

I have one like this and it works wonders. It's a different brand but looks quite similar except for the digital screen. Love the idea of that screen to make sure your settings are correct. Works great for making DIY lithium ion packs.

[oholm]

I got the version with no display and have been strugeling with a poor welding untill I saw this video, telling me to push gently on the propes and voila :D Thanks :D

[daves]

I just bought this on Amazon, im glad to see it working well. Thanks for the video

[gd.ritter]

I bought this same welder last month. It worked well with the steel strip they give you in the box but it was woefully underpowered for pure nickel strip of 0.15 or 0.20mm.

I'm on the hunt for a more powerful unit as I don't trust this to be sufficient for the pure nickel strips.

[jlarson]

Great review of a useful tool. Reasonably priced, very good value. Excellent explanation and demonstration of using the spot welder. 👏🤓

[janwieck]

Thank you for this detailed review. It helped a lot in picking the right tool. I found one that looks and operates exactly the same from a different brand. They upped the battery to 11, 000 mAh, but otherwise I cannot see any difference. Works as advertised.

[waytospergtherebro]

There is nothing catastrophically dangerous about a spot welder. Kids stuck their hands in full size ones virtually every single day in metal shop.

[HorsepowerHouse]

I use this item all the time. Great lil welder!

[chrishallgren]

Thank you so much for posting this! I bought the same unit to make battery packs and this was *really* helpful. Thank you.

[edewar]

I just received a generic version of this welder. (Although the product description stated the brand as Seesii). The probe sockets are not central in the case holes and are shorting across the metal case. Also arrived with the battery at zero charge, and USB A port mounting points had come un-soldered due to the poor fit of the case. Be careful people!

[james]

I don't know how fast you go thru the battery but presumably since it's just 1 cell that 4.2v will drop and you probably need to up the gear some if you were doing a bigger pack as the voltage drops

[williamcox]

Nice review and good information. Keep up the good work John.

[MrZeek]

Looks like a pretty solid spot welder . Great review John
Take Care

[shademe]

very helpful thank you for your time and making this video it was well made and I did enjoy it

[dwightcarlson]

Did you confirm that the strips supplied were really solid nickel? I have seen comments on some reviews that said some units are actually supplied with nickel plated steel strips because they have higher resistance make better welds but the steel strips will cause higher heat and are not good to use.

[NoferTrunions]

I'm not sure, but it doesn't seem to be a capacitive discharge spot welder - seems like a high power resistive welder. I saw this because the strips seem to have heat discoloration (blackness) and also the wood got too hot in my opinion. It's too bad you didn't get the case open, but I suspect there isn't enough room for the necessary capacitors. Nevertheless it does look usable and price will be the deciding factor. Unfortunately, circuit type (discharge vs resistive) is generally not mentioned.