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4.81 out of 5
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  • 04/07/2020

    After I assembled the board with beeper, capacitor and the cables it was not working. There was no power at the welding tips. When checking the boards circuit I found this: MCU output -> drives a PNP transistor -> drives the gates of the N-ch FETs. I post a photo of the schematic: It cannot work. The diode is assembled in wrong direction (the PNP transistor will never switch on) and even if it is reversed it cannot work. The PNP transisitor is always on then because the voltage after the diode can never be higher than MCU power supply (5V) plus diode forward voltage. I removed the diode, PNP transistor and the rest and replaced it by a PC817 optocoupler, after that the spot welder works as intended. (The original circuit may work for battery voltages up to maybe 7-8V but not higher). Did the manufactiurer made this change recently? Other users will experience the same issue like me...

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  • 05/11/2020

    Minor assembly required with soldering iron. The Capacitor and Buzzer need to be soldered on, and leads have to be soldered as well. I put XT-60 on mine so I can power it with a large 5000mah 3S lipo, or use my Lipo charger in "power supply" mode. Very easy to do and board is marked for where the 2 items have to go. Assembled min in Excellent for spot-welding RC battery packs. Works on Nicad and NiMh batteries. Also works well for LiPo's. Make sure you lift the Lipo leads up, touch them together and then spot weld. Fold them back down when done

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  • 12/06/2020

    Recommended: Comes with Zero instructions. Note: Looks professionally made but definitely DIY needed. Needs strong soldering iron for cable soldering. Cap and buzzer not soldered and the "simple" tips have to be prepared (see pic).

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  • 16/06/2020

    needs a few mods to make better.. pen cables changed to 10awg .sharpen tips connect to battery..better lugs on ends of cable ..solder some copper down sides of board now works better than expected with small battery

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  • 14/11/2020

    This was quick, arrived in 12 days at home (I live in BRAZIL), the product works yes but the configuration is not the same as the video, when vc energizes vc press the button to turn on and holds it for the board to stay giving the short every 2 seconds, After a while the board shuts off alone, so it's just do the msm button procedure again, it doesn't work on 3s 2200mAh lipo battery or 7Ah lead battery, I tested it with the 90Ah automotive sound battery, But it should work on car battery, in the photo I used a support on the battery contact just to increase the power area, that's important too, it's just, it's approved, you can buy without fear.

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  • 04/11/2021

    I bought this PCB to make soldering batteries and seen the derisory price I thought it was worth nothing, I had to change it, it works perfectly with both a LiPo 3s 11.5 Volt 50 C battery and the lead-acid battery of the machine. I was so satisfied that I decided to make it a PETG box to keep it well isolated and give it a nice look, the result as you can see is excellent, I recommend it especially to those who are familiar with the connections and those who want to try like me in the realization of a personalized enclusure.

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  • 23/03/2021

    Yes it works but for occasional use. Nickel foil (0.1mm whichever is better) and a car battery are a must. Ναι δουλεύει αλλά για περιστασιακή χρήση. Λεπτό φύλλο νικελίου (0,1mm ότι καλύτερο) και μια μπαταρία αυτοκινήτου απαραίτητα.

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  • 24/11/2021

    This kit comes with everything needed to do light spot welding jobs on Lithium batteries. The welds were not as strong as I was hoping but they seem OK. I did grind a point onto the end of the welding probes as others had suggested. I did beef up the negative bus bar by flowing more solder onto it. I used an almost new 12v 40Ah Lead Acid Leisure Battery which is within the battery specification laid out by the manufacturer of this unit.

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  • 18/04/2020

    Works great with 12v car battery. My pcb was somewhat different, there was a capacitor included so i soldered it on. the one button turns it on and cycles it through 3 power modes. On each beep the spotwelder turns on. Amazing for the price ! i didn't have clamps to attach it to the battery so i stripped a length of the cables and ziptied it to the battery terminals :D worked good.

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  • 30/10/2021

    The module is working properly, welding the sheets 0.1 & 0.15 mm. I connected it to my power-bank Blitz-woolf 12000 mAh - after checking with the power supply stabilized.

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