spot welder for lithium-ion 18650 battery tutorial - 18650 high drain battery

Build DIY spot welder for less than $60.
A great safe can be used in many cases.
The high temperature will destroy the lithium battery, so there is no choice for welding.
I want to make my own Electric Boat and E-
Bicycles using 60 Panasonic ncr18. 0b lithium batteries.
This is what you need: 1 x resistor 1k1 x resistor 10k1 x foot switch 1 x Hifi Cap min.
1F8 x MOSFET irf4041m copper cable 2.
5mm 2 m copper cable 35mm copper rail cost: about $60 for better contact.
The hole is easy to bend (Watch video)
Attach the Hifi cover to the wooden bottom plate.
Make copper clips for 35 mm² cables and covers.
Use the wodden distance plate to connect the copper rail to the fet and the hole eye.
Weld the hole eye to the SOUCE pin of the fet.
Connect all gate pins.
After the foot switch, do not get a 10 k resistor in advance between the gate and the source and the 1 k resistor.
Connect a 35 mm² welded cable to the Plus bar and the second bar on the drain copper rail.
I also installed the connector for the battery and the foot switch.
The use of welding techniques 2.
5 mm² copper cable. Stick the 2.
As shown in the video, the 5 mm² copper cable is plugged into the 35 mm² cable.
Now you are ready to do the first welding test.
To load the lid, use the power supply or 12 v battery of the 60 w light in series.
Benefits of power supply: you can change the energy in the lid. Have fun!