Features: Strong Power: The power of this spots welding tool up to 5000W, which can provides strong power and improve your work efficiency. Digital display design, you can monitor the remaining battery power at anytime. 10 level output power knob adjust design, you can adjust the output power by turn the knob, there are ten levels for you to adjust. This sopts welding machine is suitable for sopts welding batteries, mobilephone battery welding to nickel with thickness of 0.1~0.15mm. Easy to Operate: You can put the two welding pens on the nickel sheet, then press the pedal for the red light flashes 3 times quickly so it will output the current to complete the welding. The welding pin can be removed and replaced. Specifications: Material: ABS+metal Adapter: EU-Plug, US-Plug (optional) Voltage: 100~240V 50/60Hz Working temperature: 10~65 Power: 5000W Battery: 1 * lithium battery, 3.7V, 4000mAh (included)