SEQURE SQ-SW3 capacitor spot welder for 18650 / 21700 lithium batteries

Compact and powerful SQ-SW3 spot welder is designed for the production and repair of 18650 and 21700 lithium battery packs. The device uses a capacitor energy storage system, ensuring a stable current pulse of up to 2500A. Suitable for welding nickel-plated, pure nickel and copper strips. It has a color LCD display, automatic and manual modes, multiple charging methods and a durable aluminum housing for effective heat dissipation. A great choice for both DIY enthusiasts and professional work.

Features:

• Uses high-quality, low-resistance MOS transistors with a maximum operating current of 2500 A. This spot welder is suitable for welding nickel-plated steel, pure nickel and copper sheets;
• SQ-SW3 supports multiple charging methods: fast/slow charging and battery charging. It quickly restores energy and can work continuously, greatly improving the stability of continuous spot welding;
• All-metal aluminum body ensures fast heat dissipation. Superfarad energy storage capacitor is used - large energy capacity, long service life, safe and reliable operation;
• 2 start modes: automatic and manual. Has additional functions: welding point counter, temperature measurement, LED lighting, firmware update, etc.;
• High-definition (HD) color LCD screen, multi-language support – Chinese, English, Russian;
• Aluminum oxide coated copper welding tips are hard, durable and long lasting. Copper does not melt on the tip, so it does not stick to the nickel strip during spot welding;
• Double head design improves application efficiency;
• Two types of spot welding handles: separate handle SWP25 and integrated handle WP30. They are made of 25 mm² extra soft multi-core nickel-plated copper wire. Soft, oxidation-resistant, low resistance, high current carrying capacity and durable.

Specification:

• Model: SQ-SW3 capacitor energy storage, spot welding machine;
• Screen size: 1.8-inch color high-definition (HD) LCD screen;
• Start mode: Automatic mode / Manual mode;
• Output voltage: 5.6 V (max.);
• Output current: 2500 A (max.);
• Nickel-plated steel thickness: ≤ 0.5 mm;
• Thickness of pure nickel: ≤ 0.3 mm;
• Copper sheet thickness: ≤ 0.2 mm;
• Charging methods: AC, DC, fast charging, slow charging, battery charging;
• XT60IE-M connector: Charging (5.6 V, max. 15 A);
• Type-C connector: Firmware update, charging (PD3.0, DC up to 25 V max.);
• 5525 connector: Charging (DC up to 25 V max., battery up to 6S max.);
• Pedal connector: 3.5 mm AUX (4-pin);
• Dimensions: 223 x 133 x 68 mm (length x width x height);
• Weight: 1565 g.

Package:

1x SQ-SW3 spot welding machine;
1x 5.6V 15A charger;
1x 19V 2A charger;
1x USB cable;
1x 18650 battery holder;
1x 0.1 × 8 mm pure nickel (5 m);
1x File;
2x SWP25 separate handle;
1x Foot pedal;
2x M3*2 screws;
1x 1.5 mm hex screwdriver;
6x M6×8 screws;
1x 4.0 mm Phillips screwdriver;
2x 10 mm hex open-end wrench;
1x WP30 integrated handle;
2x 500 mm 25 mm² copper wire;
4x 3 × 35 mm welding tips;
1x Audio cable;
1x 2.0 mm hex screwdriver.