DIY Portable Battery Storage Spot Welding Machine PCB Circuit Board with Charge Control Module Welding Spot Welders Pen

Overview: Equipped with 3.7-4.2V 5000mA lithium battery, discharge rate up to 70C, output capacity of about 300A, output through MOS tube, this energy is concentrated at the end of the welding pen, through short circuit heating method, within a few milliseconds, the nickel sheet is firmly The batteries are fused together and are precisely controlled by a single-chip program without triggering the switch. Features: -Low voltage safe and reliable -Comes with charging control module -SCM program precise control, no need to trigger switch Instructions: 1. Solder the buzzer first 2. Weld the negative wire to the negative output (if there is no high-power soldering iron, you can use the furnace to heat the soldering iron to increase the temperature) 3. Fix the battery on the back of the battery, and fix the positive wire lugs with screws at the same time (pay attention to polarity and prevent short circuit) 4. After assembling, it is fully charged. It lights red when charging, and lights green when fully charged. Package Included: 1 x Spot Welding PCB Board with Charge Control Module (with Lithium battery) 2 x Welding Spot Welders Pen 1 x Buzzer  1 x USB Cable

• DIY Portable Battery Storage Spot Welding Machine PCB Circuit Board with Charge Control Module Welding Spot Welders Pen