Spot Welder, Kerpu Mini Spot Welder, Portable Spot Welder Machine, Spot Welding Equipment Energy Storage 5000mAh for DIY 18650 Battery, Portable Battery Welder with Type-C Port (Black)

I recently used a battery spot welder, and overall, it’s been excellent! The initial instructions were a bit confusing, but with a few helpful YouTube videos, I quickly got the hang of it.I used this spot welder to replace batteries that had a coating making it impossible to solder to the sides. The spot welder worked perfectly for this task, allowing me to make strong, clean welds with ease.Once I figured out how to use it, the performance was fantastic. It made the battery replacement process much smoother and more efficient than soldering.Overall, I’d give this battery spot welder five stars. With a bit of guidance from online resources, it’s a reliable tool that gets the job done effectively.

I read other people's reviews and I was a little scared. But, I bought it anyway. I love it! It has worked great for me. I have been using .1mm nickel strips on setting 3, for 18650 batteries, and it works great. I have not used the thicker .2mm strips that were supplied with the unit. I thought there would be a loud "pop" like I was TIG welding or something. Nope. Very small flash and a small puff of smoke. This is great for hobbyists like myself that don't like to see electronics (laptop batteries, handheld radios, vape pens, etc.) go to waste because of dead batteries. If you have a need for a light duty spot welder, I recommend this one!

I just got this spot-welder last week and have used it to rebuild one 18v Dewalt XRP-9096 so far. After about 100 or so welds, it started to noticeably loose power and the welds didn't stick as well as when I started. I forced it through to the end but the last few tabs required me to redo with solder, which puts a lot of heat into the cells. I could have a longer life between recharges but what do you expect for $40? I guess it's better than soldering and quicker too. Sharpening the points w the included file helps to keep it welding better, pretty good for the money I'd recon. JM

Plug it in to charge and pressed a couple buttons and some L.E.D.s flash like 10 times. A middle blue L.E.D. slowly flashes. Had it charging for 5 hours, still nothing. I imagine if I had used it more often it would probably work, but it seems to be junk now. Troubleshot with the seller, still couldn't get it to work, so the seller sent me a new one, even though it's been a while since the purchase. I'm a happy buyer again!

I bought this a few years ago back when it had 6 "gears". It worked ok back then but was underpowered. I think I used it a total of 2 times back then. I went to go use it again and it now no longer has enough power to weld even the thinnest nickel strips. now I have to buy another one that is more powerful and not cheap garbage. This isn't even high enough quality for a hobbyist that uses it every once in a while, because now 3 years later it is completely useless... it is complete trash that will just disappoint you over and over again. you know what they say, you get what you pay for.Also important to note: It will NOT weld pure nickel strips at all, the only thin I have been able to weld with it is the fake "nickel" strips that come with the welder. I bought separately some 0.1x8mm nickel strips (the thinnest kind that even the weakest welders should be able to weld) and it can't weld them unless you hit the same spot 3 times.

The welder works as advertised.I like the fact that it has both a manual and automatic setting when welding so you don’t necessarily have to have a “third hand “to press the weld button while holding the leads on the battery with both handsIn auto mode , There is about a half-second delay after you touch both leads to the nickel strip/ battery for the weld to initiate.I only use this for occasional welding but it looks like it will fit the bill for a long time to comeSo much easier than Soldering the connections.

Using this to repair battery packs for power tools. The factory welds on my battery packs are very strong needing pliers to pull off (dewalt batteries). This device does pretty good spot welds but i can pull the welds off moderately easily with enough force by hand. Product is very easy to use.From my own experience it seems best to go middle range setting 3-5 and keep 1 weld tip on the strip and spot weld 2-3 times more over it. Ive tried different variations spot welding once but doing 6-8 welds on 1 battery. It gives away to easily. Using max power on the same weld burns it out making the whole. Pushing too lightly makes a hole in the nickel. Using 2-3 spot welds same spot made for a better weld was very hard to pull off but for some reason it was only 1 side that was strong.This was good enough for me though as long as its hard to pull off i should be set when I make the battery packs 6-8 welds.Best tip I have for using this device, place 1 tip on item that is to be welded using your non-dominant hand and place the other tip using your dominant hand afterwards for more stability. The cables are very short but this helps a lot. I tried using little pressure and my welds were bad. I think what they meant by using pressure is don't try jamming the sh*t out of it.Just enough so the nickel strip is touching the battery.Keep the tips close but not to close seems like the farther they were the easier they ripped off.Hope someone finds this review helpful. If I don't like this spot welder ill try the kweld ahaha.

This has saved me money. I have been trying to get things to repaired and every time I do it cost me extra and so now that I've purchased this I can actually connect my own batteries to the things that need to be repaired. It's been used on a battery pack for a drill and a mangroomer back shaver. I'm getting ready to use it on my electric toothbrush.