Mini Welding Machine Portable Handheld DIY Spot Welder Kit with Soldering Pen USB Cable Home Use Small Welder for 18650 Lithium Battery

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 modes1.5s timing trigger or auto-detection trigger, four adjustable output powers, and battery indicator.
Mainly applicable to 18650 and other cylindrical lithium-ion batteries, NiMH batteries and Ni-Cd batteries.