Built-in battery The soldering iron has a built-in 1100mAh battery. Connect the USB port to a computer, power bank or mobile phone charger to charge the cordless soldering iron. Easy to use Press the switch button of the wireless charging soldering iron 5 times continuously within 2 seconds to turn on the tool, and the indicator light is on. Easy to carry The soldering iron is compact and easy to carry. Lightweight and portable, this welder takes up minimal space and is easy to store. Strong and sturdy The soldering iron pen is made of stainless steel, and the 510 threaded interface can be connected to the copper alloy soldering iron tip and the USB charging cable of the soldering iron. Wide range of applications Soldering iron, rechargeable soldering iron with cap, mini portable cordless soldering iron, USB lithium battery, wireless charging welding tools suitable for DIY design, electronic welding, jewelry repair, electrical accessories, circuit repair, etc. This includes: 1 * 1100