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DIY Portable Spot Welding Machine 12V Battery Storage PCB Circuit Board Welding Equipment Spot Welders Pen For 18650/26650/32650


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                  ● Power Supply: Users need to supply 12V battery power, welding current is about 90A~130A.
                  ● Power supply requirements: It is forbidden to use the power supply of the farad capacitor, and it is forbidden to use the lead acid battery or lithium battery pack of 60A or above.
                  ● System voltage: 12V-14.6V (capacity X rate = must be greater than 150A)
                  ● Current requirements: 150A or more instantaneous output (such as car starter power supply, 3S RC high-power battery pack, 20A lead-acid battery with good performance above 20A)
                  ● Misunderstanding: Don't think that you can use 3 series 18650 series to supply power. After all, the conventional 18650 only has 3-5C discharge rate, so each section can only provide 2.5A*3=7.5A load capacity, which is far from 150A unless 20 Parallel connection, 3 series and 60 sections of 18650 are possible, but it is obviously unrealistic.
                  ● The battery pack that can start the car can basically meet the power supply requirements of this circuit.
                  ● The following battery packs can be used as working power:
                  1. 12V car starter power supply
                  2. Model 3S high rate battery pack
                  3. 3 string high rate lithium battery pack
                  4. Hitachi 40900 3-string battery pack
                  5. 12V 20A and above lead acid battery with good performance
                  Type: Spot Welder Machine PCB Circuit Board
                  Welder Type: Battery Spot Welder
                  Voltage: 12V
                  System Voltage: 12V-14.6V
                  Working Current: 90-130A
                  Package Included:
                  1 x Welder Machine PCB Circuit Board Sets

                  Detail Pictures:

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