SUNKKO® 737G+ Battery Spot Welder 0.35mm

$207.99 - $217.39
Calculated at Checkout
google product category:
Hardware > Tool Accessories > Welding Accessories
Item location:
US and China

737G+ is a big improvement on the basis of 737G. It is specifically designed for battery welding (18650, 14500 and any other lithium batteries, etc) and can be used to weld nickel strips with thickness between 0.05 and 0.35 mm for nickel plated steel or between 0.05 and 0.25 mm for pure nickel strip.

Please read manual carefully before using it.

There are three ways of welding:

Fixed welding head with foot pedal: You can build your battery pack with the fixed welding head and foot pedal. Coordinating 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.

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.

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.

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.

Specification for welding part:
Input voltage: AC 110 V/220 V±10%
Welding current: 120 ~ 1200 A
Single pulse time: 5 ms
Max. pulse quantity: 18
Max. power output: 4.3 KW (instantaneous)

Fixed welding part:
Welding thickness for nickel plated steel: 0.15 ~ 0.35 mm
Welding thickness for pure nickel: 0.12 ~ 0.25 mm

Mobile welding 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

Product dimension: 14x25x20cm
Item weight: 7kg

Packing List:
737G+ main machine: 1 pc
S70BN mobile welding pen: 1pc
Copper welding rods: 2 pairs
Mini grinder with USB cable: 1pc 
Copper welding pins for mobile pen: 1 pair
Battery fixture: 1 pc
Foot Pedal: 1 pc
Fuse: 2 pcs
Hexagon wrench: 1 pc
0.15 x 8 x 100 mm (nickel plated steel) 50 pcs
0.1 x 4 x 100 mm (nickel plated steel) 50 pcs
Manual: 1pc

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!