Assemble Micro-Spot Welder Kit - Battery Powered (4K)

[tsbrownie]

How to assemble of an inexpensive kit I found on the internet. It is often used to weld battery packs (see warnings below). The components are of surprisingly good quality. It cost about $12.

WARNINGS: Information offered "as is". You are solely responsible for how you use it. Welding is dangerous, take proper eye, hand, fire, breathing, etc. precautions. Welding batteries carries risk of explosion, chemical contamination, etc. Electricity always carries the risk of shock, electrocution, burns, fire, etc. If you do not know, learn first or do not do it!


I found the following from what MAY BE the manufacturer. Use at your own risk!
"Switch Function:
- Press switch for 1.5 seconds to turn on (green light flash, output low power spot welding pulse every 3 seconds),
- Press switch again for 1.5 seconds (blue light flash, output medium power spot welding pulse every 3 seconds),
- Press switch again 1.5 Seconds (red light flash, high power spot welding pulse output every 3 seconds)
- Press the switch for 1.5 seconds to shut down.

System Voltage: 12V-14.6V
Working Current: 90-150A
Battery Recommendation:
20-45ah Lead-acid battery with good performance and small internal resistance
3.5-5.5ah 45C 3S aeromodel lithium battery pack
30-35ah capacity 18650 battery pack

weld thickness of 0.1MM-0.15mm or so.

It is forbidden to use the power supply of the farad capacitor, and it is forbidden to use the lead acid battery or lithium battery pack of 60A or above."

[DennisThornton]

Perhaps I missed where is it available?

I found one source:

https://www.banggood.com/DIY-Portabl...r_warehouse=CN

[tsbrownie]

Perhaps I missed where is it available?

I found one source:

https://www.banggood.com/DIY-Portabl...r_warehouse=CN

Because of Youtube's strict rules on recommending products, etc. I stay away from citing specific sellers, but if you google "12V 18650 Battery Spot Welder PCB" they pop up in many places.