Feature:1. Equipped with 2 different welding pen, adjustable pulse welding methods, and many other practical function.2. There is a standard fuse holder to ensure the safety. The corresponding parameter fuse has been installed inside.3. Clear Control panel allows for fast and easy operation to largely improve the working efficiency.4. Ideal for various welding needs, including button battery welding, car battery welding, battery maintenance and so on.5. The handle on the battery spot welder makes it much easier to carry for daily use.Specification:Item Type: Battery Spot WelderProduct Model: 709APower Supply Voltage: AC220V/110V20VPower: 3.2KW (Instantaneous)Purpose: Spot welding batterySpot Welding Current: 50~800ADouble Pulse Time: 1-10ms (Adjustable)Four Pulse Time: 2-20ms (Adjustable)Eight Pulse Time: 8-80ms (Adjustable)Welding Range of Welding Pen: 0.05~0.35mmSpot Welding Range of Spot Welding Pen: 0.05~0.2mmProduct Size: Approx. 140 x 245 x 200mm / 5.5 x 9.6 x 7.9inWelding Pen Temperature: 150~450Constant Temperature Accuracy: 5Soldering Station Output Voltage: 20VDCPower of Welding Pen: 50WHeating Time: 6-8 seconds to 300Welding Pen Type: 70BNAdjustable Welding Pin Spot Welding Pitch: 2~7mmTotal Length of Movable Spot Welding Pen: Approx. 580mm / 22.8inSectional Area of Welding Pen Cable: 16mmWelding Pin Size: Approx. 1.5 x 7mm / 0.1 x 0.3in.Package List:1 x Battery Spot Welder1 x User Manual1 x S-70BN Welding Pen1 x Constant Temperature Soldering Pen1 x Soldering Pen Holder1 x Wire Control Foot Switch1 x 18650 Six-Cell Battery Clamp1 x Hex Wrench2 x 20A Fuse (110V Machine for 30A) 4 x Spot Welding Needle with Push Welding Head 2 x Spot Welding Needle with Spot Welding Pen 50 x 0.1 x 4 x 100MM Nickel-Plated Sheet50 x 0.15 x 8 x 100MM Nickel-Plated SheetNote:Note: 1. The AC power supply line must be confirmed. The power plug of the machine must be plugged into the primary power socket to ensure good contact. Do not plug it on the secondary power socket, that is, the extension socket, otherwise it will cause a large current in the spot welding machine, and unavailable, affecting the effect of spot welding.2. The welding workpiece should stay clean. If there is oil stain on the surface, the oxide layer should be removed, otherwise the welding will be poor.3. Keep the welding taper of the welding needle and the welding needle clean, and often use fine sandpaper to wipe off the oxide layer on the tip to maintain good contact.