SUNKKO® 709A Battery Spot Welder with Soldering Iron & Welding Pen 0.03mm

$162.99 - $227.99
Usually ships within 1 business days
Calculated at Checkout
google product category:
Hardware > Tool Accessories > Welding Accessories
Item location:
US and China

Finding a tool for welding your battery packs? Sunkko 709A Spot Welder is a great choice!
709A welder helps you build your battery packs easily and beautifully. You can adjust the machine's output power conveniently as you need via buttons and knob, and the adjusting range is wide. We provide you two ways of welding, fixed welding head and mobile welding pen. The fixed head is default and welding pen expands your working range, you can build larger battery packs. We also provide the foot pedal switch for those who like using it when welding. 709A also equips with a soldering iron that helps you work, the iron's temperature can be adjusted conveniently via adjusting button.
709A is a versatile and reliable helper for you to build battery packs!

Features Overview

  • The combination of battery spot welding and circuit board soldering bring you great convenience.
  • It is convenient to use the combination of fixed welding head and mobile welding pen.
  • Provide multiple pulse quantity choices(2-default/4/6/8/10/12/14/18), the welding spots are more reliable.
  • Current level adjusting knob makes it quick and effcient to set the appropriate current.
  • Fixed welding head's pressure adjusting knob enable you to set the proper stress, the welding spots are more elegant.
  • The temperature can be contorlled accurately by the anti-static soldering station, it is suitable for welding any chips or circuit board.
  • Using external pedal switch is comfortable to control welding spot.

Range of Application

  • Welding different kinds of rechargeable battery wire lead.
  • Assembling and welding lithium-ion batteries/power bank.
  • Welding lead sheets and wire of hardware parts.


Welding Thickness

Fixed Welding Head: 0.05-0.25mm pure nickel strip or 0.05-0.3mm nickel plated steel.
Mobile Welding Pen: 0.05-0.15mm pure nickel strip or 0.05-0.2mm nickel plated steel.

Electrical Parameters
Welding Part

  • Voltage: AC 110/220±20V
  • Power: 3.2KW(Instantaneous)
  • Welding Current: 800A
  • Time of 2 pulses: 1ms-10ms(adjustable)
  • Time of 4 pulses: 2ms-20ms(adjustable)
  • Time of 8 pulses: 8ms-80ms(adjustable)

Soldering Iron Part

  • Temperature: 150℃-450℃
  • Power: 50W
  • Output Voltage: DC 20V

Welding Pen Info
Range of Application

  • Welding lithium-ion battery
  • Welding circuit board wire
  • Welding hardware component
  • Welding wire of electric appliance


  • Convenient to transport and assemble in independent set.
  • Made of low resistance oxygen free copper materials and provide stable discharging to weld.
  • Applicable for Sunkko '7' series spot welders.
  • Welding pins can be replaced to suit for different sizes to welding.
  • It is easy to use with anti-slip hand shank.
  • It has built-in pressure balance elasticity device and is good to discharging when welding.
  • High-quality aluminum alloy stay in long service.


  • Length of welding pen and cable: 580mm
  • Cross-sectional area of cable: 16mm²
  • Pin size: 1.5mm
  • Maximuin welding current: 800A

Product Info

  • New weight: 7kg
  • Size(length, width, heigth): 140x245x200mm
  • Welding thickness(fixed welding head): 0.05-0.3mm

Package List

  • Machine*1
  • Mobile Welding Pen*1
  • Replacing Welding Pins for Welding Pen*2
  • Soldering Iron*1
  • Soldering Iron Stand*1
  • Foot Pedal*1
  • Battery Fixture*1
  • Fuse*2
  • Welding Needles for Fixed Head*4
  • Hexagon Wrench*1
  • 0.1x4x100mm Nickel Plated Steel*50
  • 0.15x8x100mm Nickel Plated Steel*50
  • Manual*1
  • Warranty Card*1


 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
 70B Mobile welding pen N 1 pc
 Replacing welding pins (pen) N 1 pair
 Soldering Iron & 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 samples) 50 pcs
 0.1 x 4 x 100mm (nickel plated steel samples) 50 pcs
 Product info
 Product dimension (LxWxH, inch) 9.1x5.5x7.9  9.6x5.5x7.9
 Net weight (lbs) 9.6    15.8


 Shipping Details
 US customers  Processing time: 1-2 business days
 Shipping time: 2-4 business days(Fedex Ground or USPS)    
 Other countries   Processing time: 1-2 business days
 Shipping time: 3-7 business days(Fedex, DHL or TNT etc.)






One Year Warranty!