This is a kind of fine quality DIY spot welding machine, which is equipped with a 3.7-4.2V, 4500mAh power lithium battery, with a discharge rate of 100C and a load capacity of about 400A. Output through the MOS tube, and the energy will be concentrated at the end of the welding pen, and it will be heated by short circuit to fuse the nickel sheet firmly with the battery. Self-carried with a chargings control module, which charges the battery through the USB port. Equipped with charge indicator light, red while -charge and green after fully-charge. You can have a try.

Features:
Equipped with a 3.7-4.2V, 4500mAh power lithium battery, with a discharge rate of 100C, 300A output capacity, and a load capacity of about 400A.
Output through the MOS tube, and the energy will be concentrated at the end of the welding pen, and it will be heated by short circuit to fuse the nickel sheet firmly with the battery.
All this will be happened in milli seconds, simple and quickly.
It is precisely controlled by the single-chip microcomputer program without trigger the switch.
Free your hands or foot pedals completely.
Self-carried with a chargings control module, which charges the battery through the USB port.
And it can welding hundreds of welding points on commonly used nickel-plated sheets within 0.1mm-0.15mm if fully charged.
Equipped with charge indicator light, red while-charge and green after fully-charge.
Note: You should drill two holes on the plastics box for welding pens use.

Specifications:
Name: Spot Welding Tool
Battery: 1 * 3.7V, 4500mAh lithium battery (included)
Item size: 190 * 120 * 60mm / 7.48 * 4.72 * 2.36in
Item weight: 462g / 1.02lb
Package size: 230 * 135 * 165mm / 9.06 * 5.31 * 6.50in
Package weight: 704g / 1.55lb

Packing List:
1 * Plastics Box (unerected)
1 * Battery
1 * Circuit Board
2 * Copper Welding Pen
1 * Buzzer
2 * Screw
2 * Insulated Heat Shrinkable Tube
1 * USB Cable
1 * Nickel Sheet