Key Features Build to Last: Its aluminum shell is corrosion-resistant, rustproof, sturdy, high-strength, not easy to deform with excellent heat dissipation performance. Welding Assistant: It has an output power of 6700W and an output current of 1600A. It adopts an SCR rectifier for stable operation and can be used to assemble and maintain rechargeable batteries as well as electric vehicle power supplies and batteries, bringing you an efficient welding experience! Thoughtful Design: You can infinitely adjust the current (40-100A) and time (0-100s) by adjusting the knob to meet your needs. In addition, the one-touch switch also allows you to switch products on and off easily. High Safety: Its transformer with temperature protection and overload protection, with the back of the cooling holes, can effectively ensure the stability and safety of the product when in use. Application It can be used to assemble and maintain rechargeable batteries, electric vehicle power packs mobile power, power tool batteries, model batteries, laptop batteries and other non-aluminum-copper batteries! It can also be used in automotive manufacturing, pipeline engineering, metal fabrication, stringent construction work, on-site work, high-class welding and precision welding of thin materials (nickel-plated steel up to 0.25 mm and stainless steel up to 0.3 mm). Safe Use and Maintenance 1. Two electrodes, welding needle can not touch together, to avoid short-circuit. 2. Test welding must be tested on the weldment, try to avoid triggering the switch without the weldment. 3. When testing welding, the current and pulse should be adjusted from small to large during testing. 4. Please keep the electrode clean, and grind the needle after working for a period of time to remove impurities before continuing to use. 5. The machine's power supply should be plugged into the primary power supply socket, do not plug in the secondary power supply socket. Specifications Color: Black Shape: Rectangular Material: Aluminum Mount Type: Freestanding Assembly Required: Yes Power Source: Corded Electric Plug: EU Standard Voltage: 220V 50HZ Output Power: 6700W Welding Current: 40-100A Adjustable Welding Pulse: 0-100s Adjustable Welding Thickness: 0.08-0.25mm/0.003-0.01in Output Current: 1600A Output Voltage: 4.5V Main Transformer Insulation Voltage: DC500V 100M OHM or Above Product Size: 19*15*15cm/7.48*5.91*5.91in Package Size: 26*21*25cm/10.24*8.27*9.84in Gross Weight: 7kg/15.43 lbs Net Weight: 6.55kg/14.44 lbs Package Included 1* Spot Welder 2* Welding Pens 2* Insulation Sleeves 1* 18650 Li-ion Battery 6-hole Fixture 4* Soldering Pins 1* Foot Pedal 1* Experimental Nickel Flake Notes 1. The use of an ambient air switch is recommended for more than 30A, the air switch power is not enough may cause tripping, spot welding machine's instant working current is large. 2. Please peel the protective film off the machine before use. 3. Please note that this product can not solder copper, aluminum or plastic products.