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

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!

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.

This spot welder works, and the test welds I performed with the included nickel strips weren't fully attached until I set it to its highest output setting.The automatic mode works well, and allows you to choose how long after contact the weld takes place, so you can be sure to apply sufficient pressure in this mode.The pedal mode works well and allows you to make sure everything is set before welding.It doesn't seem to allow you to select the welding time, so the only selection is the "gear" setting from 1 to 25.Overall I was expecting more power from this, but this isn't much more power than the portable battery spot welders. It's good enough for cell welding, though.

For anyone building battery banks, this spot welder is a solid option. It handles nickel strip welding effectively, with the choice of an auto-weld delay or a foot pedal to control the welding pulse. The clear display and easy-to-use selector dial make setup straightforward. While the "super capacitor" claim might be a bit of marketing, it doesn’t impact the performance. This is a capable, user-friendly tool for precise welding tasks. Highly recommended!

This spot welder is a solid investment if you're doing battery pack welding or working with nickel strips! It feels robust and comes with 25 adjustable power levels, so I could easily control the strength depending on the thickness of my materials. I've used it primarily on 0.2mm nickel strips, and it performs clean welds without overheating. The compact, portable design is also a big plus, making it easy to carry around. Overall, it's powerful, efficient, and definitely worth the price for small to medium DIY welding jobs.