This spot welder is mainly applicable to 18650 and other cylindrical lithium-ion batteries. It is constructed with quality material and controlled by smart microcomputer to ensure precise weld, portable and compact, ideal for small welding jobs at home.

Features:
Equipped with an aluminum alloy shell, which is fire-proof and anti-fall to ensure durability and safety.
Built-in smart microcomputer to deliver accurate pulse control, and also provides overcharge protection, over-discharge protection, and supports charging while in use.
Built-in 4300mAh battery will auto discharge to 50% if not in use for over 5 days, so as to prolong battery life.
The welder is compact and comes with two quick-release red copper welding pens, portable and convenient, ideal for small welding jobs.
Providing two trigger modes"1.5s timing trigger" or "auto-detection trigger", four adjustable output powers, and battery indicator.
Mainly applicable to 18650 and other cylindrical lithium-ion batteries.

Specifications:
Material: Aluminum alloy
Charging Port: Type-C / Micro-USB(Optional)
Power Supply: 5V / 1A
Battery Capacity: 4300mAh
Output Voltage: 4.2V max.
Output Current: 639A max.
Item Size: 10 * 8.4 * 2.8cm / 3.93 * 3.3 * 1.1in
Item Weight: 288g / 10.15oz
Package Weight: 415g / 14.63oz
Package Size: 20 * 11.2 * 3.5cm / 7.87 * 4.4 * 1.37in

Packing List:
1 * Spot Welder
1 * USB Cable
2 * Soldering Pen