Vevor SUNKKO 788H Dual Pulse Spot Welder Battery Welding Machine 18650 Battery Charger

I recently purchased the 737G Battery Spot Welder and have been thoroughly impressed with its performance. Here's a detailed review based on my experience: Performance The 737G Spot Welder is exceptionally efficient in welding 0.15mm nickel-plated strips. It delivers precise and consistent welds, ensuring strong and reliable connections every time. The welding process is quick and seamless, significantly improving my productivity. Build Quality The welder is solidly built, with a robust design that feels durable and long-lasting. The materials used are of high quality, which gives me confidence in its durability over extended use. The welder is compact and lightweight, making it easy to handle and maneuver during operations. User-Friendly One of the standout features of the 737G Spot Welder is its user-friendly interface. The controls are intuitive and easy to understand, even for someone new to spot welding. The adjustable settings allow for customization based on the specific requirements of the welding task, making it versatile for various applications. Value for Money Given its high performance and reliable build, the 737G Spot Welder offers excellent value for money. It's competitively priced and delivers professional-grade results, making it a worthwhile investment for both hobbyists and professionals. Conclusion Overall, the 737G Battery Spot Welder is an outstanding piece of equipment that excels in welding 0.15mm nickel-plated strips. Its combination of performance, build quality, user-friendliness, and safety features makes it a top choice for anyone in need of a reliable spot welder. I highly recommend it to anyone looking for a dependable and efficient welding solution.

Machine a little underpowered, but I fixed that problem by rewinding the secondary coil which has two turns only on transformer with thicker wire and managed to make an extra turn too. Machine now much more powerful. Also, wired in some sockets for external cable for hand held spot welding extension. Much better now and works very well. These features should be standard on the machine.

I can’t say enough about how well this welder works. I had no problems setting it up and building up a 12cell battery for my portable vacuum. I tested a weld on an old cell and found the nickel strap fails before the weld. Good tool.

Just completed 3000+ 18650 LiIon welding without problem.

It took care of assembling the replacement battery pack on my cordless vacuum, but it did take some tinkering to adjust the electrodes just right as the arms are not precisely mounted and allow the electrode spacing to change from one weld to the next. I read reviews on similar products tripping breakers and took precautions to us a 20A breaker with the plug just 4 feet away from the breaker to avoid troubles. It would be helpful if they provided guideline setup values. I found I needed to turn the dial to full power and use the double pulse for 69 ms each and keep the electrodes clean to spot weld 0.006" [0.15 mm] nickel strip to the batteries and 0.018" [0.46mm] nickel plated steel to the strips.

showed up quick, even though it took a while for him to ship it but once he did it was quick and timely and it is what it is works great

Good

It would be great if it had more power, doesn't handle the heavier metals for stronger battery repair

Awesome, seller included VERY clear instructions, several types of sample strips and a whole huge roll of nickel plate strip. Some of the samples claimed pure nickel but last time I checked nickel was not magneticIts a little inconsistant with the wand but nothing devastating, and I wish the mounted arm was longer or adjustable. Can only weld 2 deep.

w orked good for a small battrey pack