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

I have only used the welder a few times. So far no problems. No tripped breakers, does a good job.

Great little unit. Fits perfectly on my work bench.-PB

It works okay definition for beginners if you miss the weld it'll store the energy than if you get it the next thing you know you got a hell of a spark so not for beginners but it does work as it said it would

Welds 0.15 Nickel strips to 18650 batteries with ease. I set my Pulse to 2 and the Current to 60%. It came with instructions so there is no mystery to how this is set up. For the $100 I figured there might be some small flaws. The copper welding electrodes did not sit straight or parallel to one another, so I had to bend them a little. I spaced them approximately 3mm tip-to-tip. This is great spacing to create a pretty sufficient arc weld (spark). Be careful NOT to space the tips so close that the thicker upper parts touch. I suppose this would weld them together when they short out when the pulse is activated.

Works very nice. Burnt out one electrode which was shorted against the other when I installed it. Error on my part. Good buy.

Works good, no issues as if yet.

I bought this after wasting my money on one of those red spot welders. So far I have made about 500 battery spot welds and it works great( knowing it's not a production welder I limit myself to about 50 welds and then break for a while). I am welding .15mm and running 2P 80% on salvaged 18650 batteries. My welds are just as good as the ones I removed. Head tension is probably near 80% also.

This unit worked perfectly for my job of building battery packs. Very happy with purchase.

Smaller than expected but works nicely with the little I have tried it on.

Works well with the pedal or with the pressure trigger. It could use a little more power but it seems to get the job done. It is far better to spot weld batteries vs soldering as the heat from soldering does damage to the cells but this however does not damage your cells.