12V DIY Battery Energy Storage Spot Welding Machine PCB Circuit Board Welding Equipment Spot Welder Machine Accessory for 18650 For welding 18650/26650/32650 and other lithium batteries Advantages: Portable, stable and reliable, durable Users need to provide their own 12V battery for power supply, and the welding current is about 90A~150A. It is easy to weld common 0.1mm~0.12mm nickel-plated sheets. After several generations of product updates, it is now upgraded to automatically trigger welding, freeing the fingers of the button. System voltage: 12V-14.6V Working current: 90-150A Material: PCB Suitable for: 18650/26650/32650 lipo battery Suggested battery: (not included) 20-45ah Lead-acid battery with fine performance and small internal resistance 3.5-5.5ah 45C 3S aeromodel lithium battery pack 30-35ah capacity 18650 battery pack Battery recommendation: 20-45ah lead-acid battery with good performance and small internal resistance 3.5-5.5ah 45C 3S Lithium battery pack for model aircraft 30-35ah capacity type 18650 battery pack The battery pack that can start the car can basically meet the power supply requirements of this circuit Switch function: press the switch for 1.5 seconds to turn on (green light flashes, output a low power spot welding pulse every 3 seconds), press the switch for 1.5 seconds (blue light flashes, output a medium power spot welding pulse every 3 seconds or so), press the switch 1.5 Seconds (red light flashes, high-power spot welding pulse is output every 3 seconds) Press the switch for 1.5 seconds to turn off.