Sunkko 709AD Pulse Spot Welder 18650 Battery Welding Machine 1.9KW

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Product Location:China
Product Condition:New
Sunkko 709AD Pulse Spot Welder 18650 Battery Welding Machine 1.9KW is available to buy in increments of 1
  • 2 in 1 function: battery welding function and soldering function;
  • Applicable welding range: 0.03 - 0.3 mm for Fixed Copper Head; 0.03 - 0.2 mm for Mobile Welding Pen;
  • Welding Current: 500 A; Max. Output power: 1.9 KW.
  • One Year Warranty

Actually, we also diy lithium battery packs for our e-bike or something else, so we do know that what functions a all-powerful battery welder should be equipped. We designed 709AD for those who use battery welder for a long time.

Some improvements we made based on 709A:

Intelligent cooling system:
A intelligent cooling fan can work automatically according to the machine's temperature.

Pulse option:
2,4,6,8 welding pulses selection with LCD display.

S-31A spot welding needle Grinder:
One welding needle grinder is included in the package, effectively remove the oxide layer on the surface of the welding needles.

Three welding options:
Fixed welding head: apply to a small number of batteries welding.
Fixed welding head with footswitch: coordinate your hands and feet to improve efficiency.
Movable spot welding pen with footswitch: expand your working area, used to weld battery pack.

Soldering function:
Used for circuit board etc.
Connecting BMS to battery pack. (BMS means battery management system, every lithium battery pack needs it.)

 One Year Warranty


Spot-welder part
Supply Voltage  AC 220 V, 50Hz; AC 110 V, 60Hz
Power 1.9 KW (Instantaneous)    
Current 500 A   
Electric leakage Switch Requirement ≥ 40A
Time of Double Pulse
(Instantaneous Welding Time)
1 ~ 10 ms 
(adjustable, by adjusting the welding current knob)
Time of Four Pulses
(Instantaneous Welding Time)
2 ~ 20 ms (adjustable)
Time of Eight Pulses
(Instantaneous Welding Time)
8 ~ 80 ms (adjustable)
Welding Pin Range 5 - 6 mm
Welding Pressure 300 - 750 g
Welding Distance Adjustable
Suitable Welding Thickness

0.03 - 0.3 mm for Fixed Copper Head

For pure nickel strip: 0.03 - 0.15 mm

0.03 - 0.2 mm for Mobile Welding Pen

Soldering iron part
Temperature 150°C ~ 450°C 
Power 50 W          
Output Voltage 20 V DC

Attention: 1.  This spot welder can be used to weld the nickel, nickel plated steel, nickel plated iron, iron and other alloys, but it can't be used to weld metal including copper and aluminum.

                  2. The welding thickness 0.03 - 0.3 mm indicates the thickness range of all alloy it can be weld, for nickel or nickel plated steel, the range is 0.08 - 0.3 mm.

                  3. The requirement for electric leakage switch is more than 40 A, it is not recommended to use at home.

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