This circuit with 12V battery will become a storage spot welding machine for lithium battery, nickel-chromium battery and other nickel sheet welding, according to different configurations can be welded thickness of 0.1MM-0.15mm.

Button function:
The button can switch modes. Each mode corresponds to different welding time. The LED corresponds to red/green/blue/white/yellow/powder/purple, 7 modes, the shortest red time and the largest purple welding time. Long press to set the waiting time, the default is 3 seconds, the maximum can be set to 10 seconds

Basic parameters :
- Supply voltage: 7V-12V (capacity X rate = must be greater than 150A)
- Current requirements: 150A or more instantaneous output (such as car starter power supply, 3S RC high-power battery pack, 20A lead-acid battery with good performance above 20A)
The 18650 battery and DC power cannot be used as a power supply. It must have a high rate RC battery or a car battery! ! !

Notice: Capacitors must be welded or instant restart will cause MOS break down!!!

Note:
Requires certain welding technology and circuit knowledge. ​The parts received are parts, which need to be assembled by welding
Before welding , please do power on test first to make sure the board is in good condition . Pay attention to the positive and negative poles when wiring. Please do not use a 2-wire soldering tool .when using the 3 wire iron, note that the soldering iron must be grounded ,or there will be a risk to break though the Mos. The mini capacitance should be welded on the PCB board as below picture showed.

What you Get:
1 x PCB Welding Board V3 set