DIY Portable Mini Energy Storage Spot Welding Machine with 18650 Battery Power Supply Spot Welder 7.4V 400A Complete Set

Description:It uses a customized high-rate power battery with a discharge capacity of 400A. With a stable MOS, the power battery is controlled by the control board to output a high-power current in an instant, and the instantaneous discharge current is large, thereby achieving a spot welding effect. 0.25mm Nickel plating or 0.15mm pure nickelSpecification:Current: 400AColor: blueVoltage: 7.4Vbattery: Lithium iron phosphatenickel: 0.25mmCapacity: 2.5AHPrecautions:1. Cannot change the power supply voltage and power supply without authorization.2. It is strictly forbidden to connect wires privately.3. Do not use other chargers to charge the product.Method of use:1. Since the battery has been charged, we will put a layer of heat shrinkable film on the battery to prevent short circuit conduction.2. After receiving the first layer of heat shrinkable film, please remove it, taking care not to short-circuit the electrodes.3. Put the hole of the circuit board into the battery screw and tighten the nut.4. At the same time, the two electrodes are in contact with the nickel strip and the battery surface.5. Press the switch to directly weld.Matters needing attention:1. Do not hold down the switch for a long time.2. Please press down forcefully during spot welding to prevent poor contact.3. Please feel charged when the discharge is insufficient, please use our dedicated 10.8v charger. Do not short-circuit the battery, you can use tape.Package included:Complete set + double soldering pen +