Handheld Spot Welding Pen - Cordless DIY Tool For Battery Pack Assembly

So this spot welding pen is actually pretty awesome for anyone who's into DIY projects, especially if you're building battery packs. First off - it's cordless, which means you can work anywhere without being tethered to a power source. It comes with these Japanese concentric ball head pins that work really smoothly, and the whole thing is made from thick brass strips that not only look clean but dissipate heat quickly so you don't burn your fingers. The handle has this smart double spring design where each soldering pin retracts independently, giving you really good control over the pressure. It works with DC 4-12V power and can handle currents up to 800A, which is plenty for most hobbyist projects. They include two concentric ball pins and an Allen key in the package. Just a heads up - this is JUST the welding pen, you'll need to connect it to your own power supply (positive pole) and spot welding machine. Also, they might send either the new or old version randomly, so don't be surprised if it looks slightly different from the pictures. But for assembling battery packs or any small spot welding jobs around the house, this thing is a game-changer. The brass rods come pre-cleaned and protected to keep them shiny, and the whole design just feels solid in your hand. Definitely beats trying to use bulky professional equipment for small jobs!