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# FNIRSI SWM-20 1200A Dual-Pulse 2-in-1 Portable Battery Spot Welder

**Brand:** FNIRSI
**SKU:** SWM-20
**Price:** Available via Amazon — https://www.amazon.com.au/s?k=FNIRSI+SWM-20+1200A+Dual-Pulse+2-in-1+Portable+Battery+Spot+Welder&tag=tech2have-22
**Category:** Soldering & Rework (https://level-floor.bnr.la/store/c/test-measurement-soldering.md)
**URL:** https://level-floor.bnr.la/store/products/fnirsi-swm-20-1200a-dual-pulse-2-in-1-portable-battery-spot/

## Description

The portable handheld spot welder is a high-efficiency, convenient, and easy-to-carry welding tool that adopts dual-pulse spot welding technology to ensure more stable and reliable welds and also features a power bank function. It is equipped with a 2.4-inch high-definition display screen for intuitive and clearoperation, and a rotary encoder knob for parameter adjustment, allowing users to easily and accurately set welding parameters, thereby enhancing the user experience.
Features
1200A High-Current Output for Powerful Welding : Delivers up to 1200A peak current for strong and consistent welds across various materials.
Dual-Pulse Welding Technology for Stable Results : Uses a primary pulse to remove oxide and a secondary pulse for cleaner, more reliable welds.
Wide Material Compatibility (0.1–0.5mm Range)
Supports multiple materials including:
Nickel-plated steel (max 0.4mm)
Steel (max 0.5mm)
Pure nickel (max 0.25mm)
Iron (max 0.3mm)
Copper & nickel-plated copper (max 0.1mm)
10,000+ Ultra-Fine Adjustment Levels : Provides precise power control to match different welding needs and materials.
Fully Adjustable Welding Parameters : Allows flexible control of preheat, pulse, interval, and continuous welding points.
2.4” TFT Color Display with Real-Time Data : Shows voltage, temperature, and welding parameters clearly for easy monitoring.
Rotary Knob Control for Precision Tuning : Enables fast and accurate parameter adjustments with intuitive operation.
Dual A-Grade 5000mAh Battery Cells : Ensures high power output, longer runtime, and stable performance.
Up to 1,500 Welding Cycles per Charge : Supports extended usage for both professional and DIY applications.
2-in-1 Spot Welder & Power Bank : Functions as both a welding tool and a 5V/2.1A USB power source.
Fast Type-C Charging (5V/2.1A) : Provides efficient recharging for minimal downtime.
Detachable Pure Copper Welding Pens : Uses 99.9% copper tips for high conductivity, durability, and heat dissipation.
Compact and Portable Design : Lightweight handheld form factor for easy carrying and on-site work.
8-in-1 Smart Safety Protection System : Integrates over-temp, undervoltage, overcharge, over-discharge, short-circuit, voltage stabilization, low-temp, and impact protection for safe and reliable operation.
Adjustable Auto Shutdown (0–99 Minutes) : Automatically powers off to save energy and enhance safety.
USB-C Firmware Upgrade Support : Allows future updates and performance improvements.
Versatile Application Scenarios : Ideal for battery pack building, e-bike repair, phone battery replacement, and DIY projects.
Specifications
Battery Capacity
5000mAh
Charging
5V / 2.1A
Discharging
5V / 2.1A
Welding Materials
Nickel, Iron, Stainless Steel
Welding Thickness
0.1‒0.5 mm
Max Welding Current
1200A
Level
4 Preset Combination Levels
Package List:
◉ SWM-20 Host
◉ Welding Pens
◉ Replacement Tips
◉ USB-C Cable
◉ Nickel Strip
◉ User Manual

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