Description
The FNIRSI SWM-10 Portable Dual-Pulse Spot Pen Welder is a high-performance, compact, and versatile welding tool engineered for precision work on thin metals and 18650 lithium batteries. Designed to combine portability, control, and accuracy, this advanced spot pen welder is perfect for hobbyists, DIY enthusiasts, electronics technicians, and small-scale workshop professionals who need reliable and efficient welding for delicate materials.
Whether you’re assembling battery packs, repairing electronics, or working on fine metal projects, the SWM-10 delivers consistent, stable, and high-quality welds with minimal heat damage or deformation. Its dual-pulse welding technology, cordless design, and ergonomic pen-style build make it one of the most convenient and user-friendly portable welders in its category.
Advanced Dual-Pulse Welding Technology
At the heart of the FNIRSI SWM-10 is its dual-pulse welding system, a feature that sets it apart from traditional spot welders. This innovative design delivers two precisely timed electrical pulses for each weld cycle.
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The first pulse preheats the welding surface, ensuring proper material contact and alignment.
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The second pulse executes the actual weld, stabilizing the joint and creating a strong, durable bond.
This two-step process significantly reduces heat stress, oxidation, and metal deformation, resulting in smoother welds and improved material integrity. It also minimizes the risk of burning or damaging thin sheets, which is crucial when working with delicate materials like nickel and aluminum.
Dual-pulse control ensures consistent weld strength and uniform results — ideal for high-precision tasks such as battery tab welding and fine metal fabrication.
Cordless Power and Portability
The SWM-10 is powered by a high-capacity 5000mAh 18650 lithium battery, providing excellent endurance and freedom from power cables. This cordless design offers maximum mobility, allowing users to work in tight spaces, outdoors, or in workshops without the limitations of a wired setup.
Despite its small form factor, the built-in battery delivers powerful and stable energy output, ensuring reliable performance for multiple welding sessions on a single charge. The battery management system optimizes power delivery and protects against overcharging, over-discharging, and short circuits — extending the tool’s overall lifespan.
This combination of power and portability makes the SWM-10 ideal for technicians who need a lightweight, grab-and-go welding solution without compromising precision.
Wide Material Compatibility
The FNIRSI SWM-10 is compatible with a broad range of metal types and thicknesses, making it one of the most flexible tools in its class. It supports welding on:
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Nickel sheets – Ideal for battery tab welding and battery pack assembly.
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Iron sheets – Suitable for small structural and component repairs.
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Aluminum – Perfect for lightweight metal joining in electronics or hobby projects.
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Stainless steel – Used in fine metal crafts and light industrial applications.
It handles material thicknesses ranging from 0.01mm to 0.25mm, allowing for a wide variety of use cases from micro-welding electronics to assembling 18650 battery packs with professional accuracy.
Ergonomic Pen-Style Design for Precision Control
The SWM-10’s ergonomic pen-style design ensures comfortable, steady handling even during prolonged use. Its lightweight, balanced construction allows for precise positioning and controlled application of weld points, essential for working with delicate or compact components.
The slim profile also makes it easy to maneuver in confined spaces, such as between tightly packed battery cells or within compact electronic assemblies. This design reduces hand fatigue while maintaining full control over each weld — delivering a perfect blend of comfort, precision, and performance.
User Safety and Thermal Protection
Safety is a key focus of the FNIRSI SWM-10. The welder features built-in thermal protection and intelligent temperature management that prevent overheating during extended operation. The dual-pulse mechanism itself helps moderate heat levels, minimizing the risk of damage to sensitive materials.
Additionally, the battery and circuitry are protected from overcurrent, overvoltage, and short-circuit conditions, ensuring safe and stable operation at all times. This attention to safety makes the SWM-10 suitable for both experienced users and beginners who are learning precision welding techniques.
High Efficiency and Consistent Performance
Thanks to its optimized circuitry and dual-pulse timing, the SWM-10 ensures that each weld receives a consistent amount of energy. This results in even weld depth and uniform strength, reducing the likelihood of weak joints or inconsistent bonding.
The energy efficiency of the system also means that more of the battery’s capacity is converted into usable welding power, allowing for longer operation times without frequent recharging.
This makes the device not only powerful but also cost-effective and environmentally friendly, with lower energy waste and extended component lifespan.
Applications
The FNIRSI SWM-10 Portable Dual-Pulse Spot Pen Welder is incredibly versatile and can be used across multiple fields and industries. Its precision and portability make it suitable for:
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18650 Lithium Battery Pack Assembly: Ideal for building or repairing battery packs for tools, e-bikes, power banks, and RC devices.
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Electronics Repair: Perfect for joining metal contacts, terminals, or tabs in circuit boards and devices.
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DIY Projects: A go-to tool for hobbyists working on small metal or battery-related projects.
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Jewelry and Metal Art: Provides fine control for bonding small metal pieces with minimal distortion.
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Small Workshop Use: Great for light industrial work, including component manufacturing and repairs.
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Prototype Development: Allows engineers to create and test electronic assemblies requiring secure metal connections.
This wide range of applications demonstrates the SWM-10’s adaptability, making it an essential addition to any modern workshop.
Ease of Use
Operating the SWM-10 is simple and intuitive. The pen-style grip allows users to easily position the electrodes at the target weld spot. Once in place, the device delivers controlled dual-pulse energy at the touch of a button.
The automatic pulse timing ensures precise and repeatable results, eliminating the guesswork common in manual welding setups. With minimal setup required and easy-to-learn operation, even beginners can achieve professional-quality welds in minutes.
Durability and Build Quality
The SWM-10 is constructed from high-quality materials designed to withstand regular use in demanding environments. Its durable outer shell provides excellent protection against impact, while the internal electronics are shielded against heat and electrical stress.
The welding pen and electrode tips are built for long service life and can be easily replaced when necessary. This ensures the tool remains dependable for years of use, even in high-frequency applications.
Why Choose the FNIRSI SWM-10?
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Dual-Pulse Welding Technology: Ensures stronger, cleaner, and more precise welds.
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Cordless Operation: Powered by a 5000mAh lithium battery for maximum portability.
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Multi-Metal Compatibility: Works with nickel, iron, aluminum, and stainless steel.
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Precision Pen Design: Lightweight and ergonomic for accurate control.
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Safe and Reliable: Equipped with intelligent heat management and multiple safety protections.
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Ideal for Professionals and DIYers: Suitable for battery assembly, metal crafts, and electronics repair.
Conclusion
The FNIRSI SWM-10 Portable Dual-Pulse Spot Pen Welder is a powerful yet compact solution for precision welding needs. Combining advanced dual-pulse technology, cordless mobility, and ergonomic design, it enables users to achieve professional-grade welds anytime, anywhere.
