Feature: 1. MANUAL AUTOMATIC MODE: This spot welder supports automatic and manual mode switching, manual mode ensures independent control of spot welding accuracy, automatic mode makes operation easier. 2. 11 GEARS ADJUSTMENT: This spot welding machine supports 11 gears adjustment, 1‑3 gears for welding phone battery, 4‑5 gears for 0.1mm materials, 6‑7 gears for 0.15mm materials, 9‑11 gears for 0.2mm materials. 3. SINGLE OR DOUBLE PEN: Support use single pen to spot welding chip, fix battery cells on the operating platform for precise welding, and also support double pen structure for repairing old equipment. 4. NO BOUNDARY DESIGN: This operating platform has no boundaries, ensuring that the size of battery cells is not limited, suitable for various brands and sizes of mobile phone battery, with strong compatibility. 5. WITH CLEAR SCALES: The battery spot welding platform has standard and clear scales, ensuring accurate locating and stable spot welding, greatly improving spot welding efficiency. Specification: Item Type: Spot Welding Machine Battery: 1 x 3.7V Lithium Polymer 4000mAh (built in battery) Gear Setting: 11 Gears Adjustment Spot Welding Mode: Automatic and Manual Design Current: 650A (Maximum) Input Interface: Type C Charging Port Input Parameter: 5V 2.1A (Maximum) Output Voltage: 4.2V (Maximum) Output Current: 650A (Maximum) USB Output: 5V 2.4A (Maximum). Package List: 1 x Host1 x Nickel Sheet1 x Sandpaper1 x Charging Cable1 x Spot Welding Pen2 x Fixed Magnets1 x User Manual