Description: Equipped with a 3.7-4.2V battery, discharge rate up to 65C, and output capacity is about 300A, this handheld welding tool can provide solid welding and convenient charging. Precisely controlled by the MCU program and output through the MOS pipe, you don't need to run the switch when using, this manual spot welding is laborious and convenient to use, and it is portable. This manual spot welding machine is made of metal and ABS. Its length is 20cm, width is 6cm, and height is 3cm. It is suitable for soldering, repairing, DIY and so on. Item Name: Spot Welding Tools Material: ABS,Metal Batteries: 5000mAh Battery (Included)Thickness: 0.1-0.15mm Size: 20cm x 6cm x 3cm/7.87inx2.36inx1.18in Notes:1. Due to the light and screen setting difference, the item's color may be slightly different from the pictures.2. Please allow slight dimension difference due to different manual measurement.3. You must have significant electrical knowledge to operate this product, do not short circuit or invert the electrode.4. The copper ear of the black soldering iron is connected to the top surface of the circuit board by M5 screws, and the copper ear of the red soldering iron is connected to the positive electrode of the battery (on the back of the circuit board).5. Full charging with USB cable after assembly (In order to ensure the durability of the battery, we set a lower charging current, the charging process is about 4 hours, the red light will be on when charging, and the