Battery Spot Welder, AWithZ Handheld Spot Welder 11 Gear Adjustable, Automatic and Manual Modes Battery Welder for 18650 Battery, Welding Nickel Sheets, Iron (Black-H1)

Works great! Never used a battery spot welder before this. Very easy to use. Bought for rebuilding a M18 5ah battery pack, and it holds just enough charge to comfortably do all the spot welding needed on one battery pack. It charges "quickly". I'd recommend using some light scotchbrite pad every few welds to clean the electrode tips.

Works great for metal and nickel strips 0.015 0.010 doesn’t last long and I recommend a second one the seesii that’s super powerful but that’s for double plate be careful use on 3 and this one on max it’s fire need 2 minimum these are the best for the money 5:5 stars for price and what it did for me and did not break like the crappy box polymer battery 5-8kw with clear wire cables that is trash had to wait a month longer in delays this is definitely recommended for a budget for small packs or repairs wil need multiple- this model and the bigger one set start on 3 will need 10 when double or triple plate both together makes an amazing combo but will need to let charge frequently lasts 8-12 minutes max charges 30-50 minutes not fully charged maybe 1.5 hours on e I don’t know I leave the house but if building larger packs it’s good don’t use copper it won’t work - plus my one copper bus #6 is giving me issues I may replace with metal and nickel like the rest - good luck 🍀

I have an OEM DeWalt battery here that failed. Upon checking it, I found that 2 of the batteries were bad. I used a 1/8" drill bit to partly drill each weld out to weaken the metal in those spots, then used a screwdriver to pry up the metal weld tabs so it could be reused. The original metal was much thicker than the metal given in the kit to weld with. Here is what I found using the original tabs on the battery pack.I tried using it to weld on the thicker part at half power. It did nothing but leave a tiny mark on the metal. I then adjusted the setting to the highest or strongest setting. At that setting, where the metal was thinner because of drilling the old welds out, it did make a weld. But when I tried it on the thicker part of the metal, it still would not weld. Upon hitting the same spot consecutively, one after another, it did make some connection. Not sure how good though. If I angled the welder at 45° on the edge of the metal, I could get a weld too. again, not sure how good each weld is.. but with multiple small welds on each tab, it seems to be holding.Knowing all this now, I would suggest that if you need to replace batteries, if possible, I would not try to use the original welding tabs, but use metal more like what is included in the kit, as the OEM metal tabs on the battery are too thick of metal to use this on easily.Basic questions answered. Yes, I did clean up where the old welds were by grinding any high spots off with a cut off disk on a Dremel, and then flattening the metal with pliers with no grooves. Also, the whole time I was using it, I had it plugged in because upon getting it, it did not have a full battery. I was connected to a 3 amp USB power supply. I don't know if this made any difference.Final thoughts. This is good for welding thin metal, but not thick metal like in battery packs, like the 20v DeWalt ones. Doing all my different testing let me know the limitations of this device for the next time I need to replace batteries in something else. As they say, live and learn..

Really not happy with this spot welder. Had it on max level and it couldn’t weld a .2 mil zinc strip to a 18650 battery. It’s fully charged, tried both auto and manual modes but it barely even throws a spark. Zinc plate pulls right off with a minor twist.Save your money and buy something a little more powerful.

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Ideal for Repairing TooI purchased this spot welder specifically to repair some tool batteries, and it’s perfect for the job! The 11 adjustable gears give you great control, allowing you to fine-tune the settings depending on the materials you're working with. Both the automatic and manual modes are easy to use, which adds versatility depending on the project at hand.It’s compact but powerful, and it works flawlessly for welding nickel sheets to batteries. The build quality feels solid, and the 2M of included nickel is a nice bonus. If you're doing battery repairs or small welding projects, this tool is a great addition to your workshop!l Batteries with Precision

This is an attractively packaged, nicely designed tool with straightforward operation. The multifunctional buttons are fairly intuitive, and if they're not, the instructions are clear.Even so, it's been pretty hit and miss for me to find the right combination of settings and technique for the thickness of metal tape (provided) and the battery surface I'm trying to weld it to.I suppose it's possible the tool is either underpowered, or the settings are not as precise as they need to be. But I'm going to chalk it up to user error/inexperience. Like most things, it probably takes a lot of practice.That said, I am no stranger to tools, metal working, or electronics, so I'm also going to say be prepared to play with this a lot before you get consistently useable results.

I've delt with many projects that had to replace 18650s and guess what I use to try to penny pinch and save money by never buying one of these and just use my soldering iron to melt a bit of solder (crossing my fingers that nothing would ever blow up LOL)but this little guy just ROCKS, slightly heats up the battery a tiny bit but nothing compares to the damn soldering iron trick I use to do! I had to bump it up to level 7 to really nail down onto my 18650 (if you work with 18650 please look into NCR original 18650's made in Japan best thing out got em on ali expresso)Wish I bought one of these long ago, I replaced the battery on my bose portable home speaker it now holds more charge than it did when it was new :D(I really went crazy with the welding (may take some trials to weld onto your new battery) but after a few zaps you will get the hang of it. The learning curve really is under 10min!