1. 99 gear power regulation, digital tube real-time gear display 2. Support 0.1-0.2mm sheet spot welding, with more thorough welding and welding spots 3. 8 MOS tubes, the welding current can reach 2400A 4. Bilateral outgoing line is convenient for spot welding, and the product is marked to avoid wrong connection 5. 12AwG wire, aluminum oxide copper spot welding needle, ensuring excessive current capacity and durability, greatly improving spot welding efficiency Product name: 99 grade spot welder Product model: GX591 Working voltage: 8V-24V Working current:Less than 20ma Standby power consumption:Less than 0.5 ma Thickness of welded sheet: 0.1-0.2mm (related to battery discharge energy) Welding current: 2400A MAX Product size: 89 x 54mm Power supply requirements: Lead acid battery: battery car battery: 20AH * 2 (new); Starting battery of new car: 36-45AH Model aviation battery: 3S 4000MAH 35C/3S 5000MAH 25C/3S 8000MAH 20C Vehicle starting power supply: 11.5-14.8 V 36-60AH, internal resistance should be 2.5 milliohms, less than 7 milliohms Self assembled battery: 11.5-14.8 V battery with internal resistance less than 7 milliohms Colour:Black+yellow Material:PCB+metal Package Contents: 1 x Spot welding 2 x input line 2 x spot welding pen 2 x heat shrink sleeve 1 x screw pack 1 x sheet Only the above package content, other products 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.