Feature: 1. Hand-held welding pen, constant temperature welding pen, support quick current setting, welding needle pressure adjustment, pulse group selection 2. LED welding pin double row quick pull-in welding pen, high-power welding for 0.3mm, intelligent cooling system, pulse value display 3. The compact body shape, with convenient handle, which is more lightweight and convenient to move 4. Fixed pulse spot welding, using a fixed pulse spot welding head to perform spot welding on three rows of battery packs 5. Can be used for spot welding of battery nickel sheets, including a variety of tools, complete accessories, and easy to use Specification: Item Type: Spot Welder Model: 709AD Purpose: Spot welding of battery nickel sheets Power Supply Voltage: AC220V/110V±20V Power: 3.2KW (instantaneous) Spot Welding Current: 50~800A Double Pulse Time: 1-10ms (adjustable) Four Pulse Time: 2-20ms (adjustable) Eight Pulse Time: 8-80ms (adjustable) Fixed Head Spot Welding Range: 0.05~0.35mm Spot Welding Range of Spot Welding Pen: 0.05~0.2mm Body Size: Approx. 140 x 245 x 200mm / 5.5 x 9.6 x 7.9in Constant Temperature Soldering Pen Part: Soldering Pen Temperature: 150℃~450℃ Constant Temperature Accuracy: ±5℃ Soldering Station Output Voltage: 20VDC Power of Soldering Pen: 50W Heating Time: 6-8 seconds to 300℃ 70BN Mobile Pulse Spot Welding Pen Part: Adjustable Welding Pin Spot Welding Distance: Approx. 2 ~ 7mm / 0.1 ~ 0.3in Total Length of Mobile Spot Welding Pen: Approx. 580mm / 22.8in Cross-Sectional Area of Soldering Pen Cable: 16mm² Soldering Pin Size: Approx. 1.5 x 7mm / 0.1 x 0.3in. Package List: 1 x SUNKKO 709AD Host1 x User Manual1 x S-70BN Spot Welding Pen1 x Constant Temperature Soldering Pen1 x Soldering Pen Holder1 x Wire Control Foot Switch1 x 18650 Six-Cell Battery Clamp1 x Hex Screw Wrench2 x 20A Fuse (110V machine with 30A)4 x Push Welding Head Spot Welding Needle 2 x Spot Welding Pen Spot Welding Needle50 x 0.1x4x100mm Nickel Plated Sheet 50 x 0.15x8x100mm Nickel Plated Sheet1 x S-31A Welding Needle Electric Grinding Machine Note: 1. The AC power supply line must be reliable. The power plug of the machine must be plugged into the primary power socket to ensure good contact. Do not plug into the secondary power socket, that is, the extension socket, otherwise it will cause a large current in the spot welding machine unavailable, affecting the spot welding effect.2. The welding workpiece should be 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.