SUNKKO® 788H Battery Spot Welder Pulse Spot Welding Machine for 18650 Lithium Batteries Battery Pack Battery Charging and Testing

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Hardware > Tool Accessories > Welding Accessories
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788 series features battery pack charging function.
788H has the additional battery pack testing function but no USB charging ports.
788H can charge nominally 4.2-30V battery pack and test the actual voltage of battery pack below 50V.
Applicable to weld 18650, 14500 and other lithium batteries.
One way of welding: fixed welding head, welding with foot pedal is optional.
Press the button and adjust the knob, machine's power is changed conveniently.
The built-in LED light helps you work at night.
Welding thickness: 0.05-0.15mm pure nickel strip or 0.05-0.2mm nickel plated steel.
Please read the manual carefully before using.
Technical Details (Yes: Y ; No: N)

 Model  737B   737G   788H   788H-USB   709A   709AD   709AD+ 
 Welding thickness of pure nickel strip 0.15mm 0.25mm
 Welding thickness of nickel plated steel 0.2mm 0.3mm
 Mobile welding pen N Y
 Soldering function N Y
 Pulse quantity range 1-2 2-18
 Lithium battery pack charging function N Y N
 Single pulse time 5ms
 Max. welding current 800A
 Auto-welding mode N Y
 Auto-cooling system N Y
 Pulse quantity display N Y Y Y N Y
 Current level display Y Y Y Y N N
 Welding LED light Y
 Pressure adjusting knob Y
 Requirement of Home Circuit Breaker 40A
 Package list       
 Welding machine 1pc
 Copper welding rods 2 pairs
 Battery fixture (6 cells) 1 pc
 Foot pedal 1 pc
 Fuse (20A for 220V machine; 30A for 110V machine) 2 pcs
 Mobile welding pen N 1 pc
 Replacing welding pins (pen) N 1 pair
 Soldering pen & stand N 1 set
 Lithium battery pack charging cables N 1 pair N
 Mini grinder (copper rods polishing) N
1 pc
 USB cable N 1 pc
 Hexagon wrench 1 pc
 0.15 x 8 x 100mm (nickel plated steel) 50 pcs
 0.1 x 4 x 100mm (nickel plated steel) 50 pcs
 Product info
 Product dimension (LxWxH, inch) 9.1x5.5x7.9  9.6x5.5x7.9
 Net weight (lbs) 9.6    15.8

Charging and Testing parameters:
Voltage output: 4.2-36 V
Current output: 0-3 A (Max)
Precision of constant current: ±2.5%
Voltage stability: ±1.5%
Measurement error: ≤1.5%
1. Sunkko welding machine can be used to weld the pure nickel strip, nickel plated steel, nickel plated iron, iron and other alloys, but it cannot be used to weld metals like copper and aluminum.
2. The machine must be powered by wall outlet but not the platoon insert. 
3. The surface of nickel strips and batteries should be clean enough, dirty surface will influence the welding effect.
4. If home circuit breaker trips after switching on the machine or welding with high current, a new 40-63A circuit breaker is needed for replacement. 

 Shipping details
 Processing time: 1-2 business days Shipping time: 2-4 business days(Fedex Ground or USPS)










One Year Warranty!