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Mobile welding pen with foot pedal(MT)

: The mobile welding pen effectively 

extends your welding area, and this design is popular among electric hobbyist, 
because they can build large lithium battery packs for their e-bikes or other 
projects. 

Welding range

: 0.05~0.2mm for nickel plated steel, 0.05~0.15mm for pure nickel 

strip; 

Preparation steps

1.  Insert mobile welding pen.(In this case, do not fit  welding head with 

copper welding rods.) 

2.  Plug in foot pedal. 
3.  Turn on the main power button, and then the welding power switch. 
4.  Weld your batteries with mobile welding pen along with the foot pedal. 

 

Mobile welding pen without foot pedal(AT)

: In this mode, you need to unplug 

the foot pedal first. Once the welding pen attaches nickel strip, the welding pen 
will release the energy and weld automatically, you just need to give a little 
pressure to the pen just like you are writing. 

Welding range

: 0.05~0.2mm for nickel plated steel, 0.05~0.15mm for pure nickel 

strip; 

Preparation steps

1.  Insert mobile welding pen. (In this case, do not fit welding head with 

copper welding rods.) 

2.  Turn on the main power switch, and then turn on the welding power 

button. 

3.  Adjust the pulse quantity and welding current level to make the spots 

more reliable and elegant. 

4.  Weld your batteries with mobile welding pen. 

 

(

Attention

: In all the steps mentioned above, please make sure that the 

copper welding rods of the fixed head and the welding pins of the mobile 

welding pen are not in contact with each other to avoid short circuit. When 

users need to adjust the distance between welding pins on mobile welding 

pen or distance between copper welding rods of fixed head, please turn off 

the welder first, do not adjust the distance when the welder is on.) 

 

In general, there are two methods to improve the output power of spot 

welding: adjusting welding current level through current knob or adjusting 

pulse quantity. You may need to play with them a bit to get the best 

combination for your specific use. 

 

How is the pressure knob works? 

The pressure knob regulates the pressure between copper welding rods and 

nickel strip. Generally speaking, the thinner the nickel strip, the smaller the 

pressure. A proper pressure between nickel strip and welding rods can also 

make the spots more elegant. 

Summary of Contents for 737G+

Page 1: ...Model 737G Thank you for choosing Sunkko 737G battery spot welder let s now make the building of Lithium battery pack for our projects more convenient and efficient Manual ...

Page 2: ...oordinating hands and feet at the same time will make the long term welding process not so tiring plus the use of foot pedal during battery welding improves the precision of spot welding In this welding mode you need to adjust the pressure adjustor to make the spots more reliable and elegant Welding range 0 15 0 35mm for nickel plated steel 0 12 0 25mm for pure nickel strip Preparation steps 1 Fit...

Page 3: ...it welding head with copper welding rods 2 Turn on the main power switch and then turn on the welding power button 3 Adjust the pulse quantity and welding current level to make the spots more reliable and elegant 4 Weld your batteries with mobile welding pen Attention In all the steps mentioned above please make sure that the copper welding rods of the fixed head and the welding pins of the mobile...

Page 4: ...elding part Welding thickness for nickel plated steel 0 05 0 2 mm Welding thickness for pure nickel 0 05 0 15 mm Specification for mobile welding pen Welding needle distance adjustable 2 7 mm Total length approx 22 8 Cable cross sectional area 16mm2 Dimension of welding pins 1 5x7mm Others Product dimension 14x25x20cm Item weight 7kg Packing List 737G main machine 1 pc S70BN mobile welding pen 1pc...

Page 5: ...ible with the common voltage transformers in the market 7 Continuously spot weld too fast will speed up the loss of internal components of the spot welder We recommend that the time between each spot welding should be 3 seconds or longer Warranty information 1 What is covered This limited warranty covers defects in main machine 2 What is not covered The warranty does not cover any damage caused by...

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