Battery Spot Welder, 3000F Capacitor Battery Spot Welder, 25 Gears Adjustable Portable Super Capacitor Spot Welder for 0.1-0.3mm Nickel Strip Welding

This spot welder for battery packs is highly efficient and user-friendly. Simply plug it in and wait for the capacitor charge. It easily weld thicker materials without any problem. The unit comes with all necessary components for battery repair or replacement. Great price.

the little portable units only seem to weld if you don't press very hard. This one does a better job with a little bit of pressure. Makes me think it's doing a better job of fusing the battery to the nickel strip rather than just melting the nickel strip and it sticking to the battery terminal. Still have to find the right balance of pressure.

After wasting my time with cheaper, battery powered units that never worked or worked well, I tried this unit. It worked perfectly right out of the box. No hassles, and the foot pedal was an excellent addition. Plenty of power. Rebuilt 3 power tool batteries with ease the first time using it.

Cannot get the foot pedal to work. I watched the video with the instructions, did as the video said exactly. Yet, the foot pedal will not work at all for me.

This is a pretty basic design that's similar to several other chinese spot welders. it warmed up quickly (took a few minutes to reach 5V). The guards for the probes are pretty basic so i'll probably reinforce or use tape to keep them from moving around. but otherwise it worked as expected and was able to repair some broken spot welds on my mug. no idea about longevity or durability yet, but it does work and it's relatively cheap!

Very easy to use, just a slight learning curve trying different gear settings for different tasks. Definitely start with a lower gear to begin with and increase if needed. Great tool and works exactly as intended.

The spot welder had plenty of power for my needs. Fixing power tool battery packs. A little too much at the full setting when it’s fully charged but that’s not a problem. I just turned it down.Overall good enough for the money. I’m happy with it.

This is a great unit and works just as intended. Battery packs can be expensive and a lot of times it can be just 1 or a few cells that are not working so I replace the bad cells with new ones and this welder is needed to weld the packs back together. The machine itself has already paid off with the amount of battery packs I have repaired for my power tools and kids toys. and laptop battery. This is great for anyone doing battery repairs for business.