SUNKKO® 737G+ Battery Spot Welder with Current Display & Welding Pen 0.35mm

$207.99 - $265.99
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 737G+ Spot Welder is a great choice!
737G+ 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 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 expand your working range, you can build larger battery packs. We also provide the foot pedal switch for those who like using it when welding. 
737G+ is the upgraded version of 737G, it has additional mobile welding pen and intelligent auto-welding mode, which means you don't need to use a foot switch when welding by pen. 
737G+ is a versatile and reliable helper for you to build battery packs!

Features Overview

  • Induction mode for fast setting pulse group and fast welding.
  • Automatic induction welding helps you work in high speed.
  • It is convenient to use the combination of fixed welding head and mobile welding pen.
  • Fast to weld large size battery pack.
  • Provide 2/4/6/8 pulse quantity choice to ensure welding quality, the welding spots are more reliable.
  • Using external pedal switch is comfortable to control welding spot.
  • Fixed welding head's pressure adjusting knob enable you to set the proper stress, the welding spots are more elegant.

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: 0.12-0.25mm pure nickel strip or 0.15-0.35mm 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 110V/220V±20V
  • Power: 3.2KW(Instantaneous)
  • Welding Current: 120-1200A
  • Time of 2 pulses: 1ms-10ms(adjustable)
  • Time of 4 pulses: 2ms-20ms(adjustable)
  • Time of 8 pulses: 8ms-80ms(adjustable)

Welding Pen Info

Range of Application

  • Welding leading wire of lithium battery
  • Welding leading wire of circuit board
  • Welding metal components
  • Welding leading wire of electronic appliance's shell.
  • Welding for hobby


  • 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.


  • The adjustable diatance of welding needle: 2-7mm
  • Thr total length of removeable welding pen: 580mm
  • The area of welding pen's cable: 16mm²
  • The size of welding needle: 1.5mm x 7mm

Package List

  • Welding machine*1
  • 70B mobile welding pen*1
  • Copper welding rods*4
  • Mini grinder (copper rods polishing)*1
  • USB cable*1
  • Replacing welding pins (pen)*2
  • Battery fixture (6cells)*1
  • Foot pedal*1
  • Fuse (20A for 220V machine; 30A for 110V machine)*2
  • Hexagon wrench*1
  • 0.15 x 8 x 100 mm (nickel plated steel)*50
  • 0.1 x 4 x 100 mm (nickel plated steel)*50
  • Manual*1


 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!