Models, electronic tools and so on. Due to the diversity of battery shape and volume and the limitation of power supply mode, the welding machine lacks flexibility. SQ-SW1 is battery powered, OLED display can show high and low voltage warning. Using the new spot welding technology, and intelligently switching automatic or manual working mode to different needs. It is a flexible and efficient welding tools. This is a kind of quality spot-welding machine set, the housing is made of hard aluminum alloy material, wear resistance and can long service time. OLED display, you can see the delay time, remaining electric , battery voltage, battery recharging current. with memory function and 5minutes automatic power off function. Compact size, lightweight and portable, easy to carry around with you. The housing is made of hard aluminum alloy material, wear resistance and can long service time. OLED display, you can see the delay time, remaining electric , battery. Technical Parameters 1. Input Voltage: 10-14V 2. Welding Thickness: 0.1-0.3mm 3. Trigger Delay: 0.5-3s 4. Screen Flip: 180 5. Time: 1-100ms(default),1-500ms(setting) 6. Short : 0-100% 7. Work Model: Automatic/Manual 8. Voltage Warning: Low Voltage/High Voltage 9. Power Supply Interface: XT90 10.Recommended Battery: Lithium battery (3S 5000mAh minimum 60C) Car battery (12V 400-800CCA) Type:B Material: Metal colour: Black Package Contents: 1 x 1 x One-piece soldering pen 1 x belt 2 x Solder pin 2 x battery holder 1 x and English manual Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.