{"product_id":"fnirsi-swm-20-portable-spot-welder-double-pulse-battery-welding-machine-18650-battery-diy-pack-welding-tool-0-5mm-nickel-chip","title":"FNIRSI SWM-20 Portable Spot Welder Double waveform Battery Welding Machine 18650 Battery DIY Pack Welding Tool 0.5mm Nickel Chip","description":"\u003csection data-tufzen-geo-summary=\"v1\" class=\"tufzen-product-summary\"\u003e \u003ch2\u003eProduct Summary\u003c\/h2\u003e \u003cp\u003eFNIRSI SWM-20 Portable Spot Welder Double waveform Battery Welding Machine 18650 Battery DIY is a soldering and rework tool selected for soldering, desoldering, spot welding and board repair tasks. It is suitable for PCB repair users, makers and electronics assembly workflows who need practical electronics hardware for reliable project work.\u003c\/p\u003e \u003ch3\u003eBest For\u003c\/h3\u003e \u003cul\u003e \u003cli\u003esoldering, desoldering, spot welding and board repair tasks\u003c\/li\u003e \u003cli\u003ePCB assembly, battery pack work and repair bench setups\u003c\/li\u003e \u003cli\u003eElectronics testing, repair, prototyping and maker workflows\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFAQ\u003c\/h3\u003e \u003cp\u003e\u003cstrong\u003eWho is this product for?\u003c\/strong\u003e It is intended for PCB repair users, makers and electronics assembly workflows.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhat should I check before buying?\u003c\/strong\u003e Review the product options, specifications, included accessories and compatibility details on this page.\u003c\/p\u003e \u003c\/section\u003e \u003cdiv class=\"detailmodule_html\"\u003e \u003cdiv class=\"detail-desc-decorate-richtext\"\u003e \u003cp\u003e \u003c\/p\u003e \u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/tufzen-fnirsi-swm-20-portable-spot-welder-double-waveform-battery-welding-machine-18650-ba-1.webp?v=1779202510\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/div\u003e \u003cdiv class=\"detailmodule_html\"\u003e \u003cdiv class=\"detail-desc-decorate-richtext\"\u003e \u003cdiv\u003e \u003cdiv\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe SWM-20 Portable Handheld Spot Welder is an efficient, convenient, and highly mobile welding tool designed for precision. Featuring advanced dual-waveform technology, it ensures exceptionally stable and robust welds every time. Beyond welding, it doubles as a versatile power bank for your devices. The integrated 2.4-inch HD display provides a clear, intuitive interface, while the precision encoder knob allows for effortless and accurate parameter adjustments, significantly elevating the overall user experience.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e1. Advanced Double waveform Technology for Industrial-Grade Welds\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eEquipped with a powerful 1200A max output and advanced double-waveform welding technology, this tool ensures cleaner, stronger, and more consistent welds. The pre-heat and main waveform stages work together to eliminate sparks and oxidation, making it perfect for building massive 18650\/21700 battery packs with professional-level stability.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e2. 2.4\" HD Color Display \u0026amp; Precision Encoder Tuning\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe vibrant 2.4-inch high-definition screen provides a crystal-clear real-time view of your parameters, including pre-heat, interval, and waveform width. Combined with a tactile encoder knob, you can adjust settings with surgical precision for a much smoother, more intuitive experience than traditional button-only models.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e3. Professional 0.5mm Welding Range \u0026amp; Customizable Gears\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe SWM-20 effortlessly welds nickel, iron, and stainless steel sheets with thicknesses ranging from 0.1mm to 0.5mm.With 4 combination gear modes and adjustable continuous spotting (1-9 dots), you can perfectly tailor the heat output to match the thickness of your specific project materials.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e4. 2-in-1 Versatility: Spot Welder \u0026amp; 5000mAh Power Bank\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eThe SWM-20 features a high-rate 5000mAh lithium battery that supports 5V\/2.1A fast charging and discharging. Not only is it a top-tier welding tool, but it also serves as a reliable portable power bank to charge your smartphones or tablets during outdoor repairs or emergencies.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e5. Compact, Portable \u0026amp; Safety-First Design\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eDesigned for the DIY enthusiast and professional technician alike, this handheld welder is compact enough to fit in your pocket or toolbox. The ergonomic design ensures a comfortable grip for long sessions, while the integrated safety management system prevents overheating, making it the ideal on-the-go solution for battery pack maintenance and lab experiments.\u003c\/span\u003e\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cp\u003e\u003cbr\u003e\u003c\/p\u003e \u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/tufzen-fnirsi-swm-20-portable-spot-welder-double-waveform-battery-welding-machine-18650-ba-2.webp?v=1779202509\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/div\u003e \u003cdiv class=\"detailmodule_html\"\u003e \u003cdiv class=\"detail-desc-decorate-richtext\"\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cstrong\u003eBasic Parameters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eBattery Capacity: 5000mAh\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eCharging: 5V\/2.1A\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eDischarging: 5V\/2.1A\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eWelding Materials: Nickel, lron, Stainless Steel\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eWelding Thickness: 0.1-0.5mm\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eMAX Welding Current Level: 1200A 4 Preset Combination Levels\u003c\/span\u003e\u003c\/p\u003e \u003cdiv\u003e \u003c\/div\u003e \u003cp\u003e \u003c\/p\u003e \u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/tufzen-fnirsi-swm-20-portable-spot-welder-double-waveform-battery-welding-machine-18650-ba-3.webp?v=1779202510\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/div\u003e \u003cdiv class=\"detailmodule_html\"\u003e \u003cdiv class=\"detail-desc-decorate-richtext\"\u003e \u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e1.SWM-20 Spot Welder \u003cbr\u003e2. User Manual \u003cbr\u003e3. Nickel Sheet\u003cbr\u003e4. Replacement Tip\u003cbr\u003e5. Data Cable\u003cbr\u003e6. Soldering Pen\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/tufzen-fnirsi-swm-20-portable-spot-welder-double-waveform-battery-welding-machine-18650-ba-4.webp?v=1779202510\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/div\u003e \u003cdiv\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S32883b9956b642f2a0a68779bec0a678d.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S82a5cf99054b46f18f6f81be91c404d67.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/Sacbd64911f6241c88b94f09afad3a6034.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S22909f4da9564f50a6903ed1dd060f25N.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S6360bc3a3bd8416a8d078e55f3aafe5f1.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S3246221cb11d41c582c5f71e27cffe26a.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/Sadab929e507c4fe7a616d36b83a447b6i.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/Sd5c0ae9fd3a04b0cbb0b63a5fe4d4589k.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S061b5573846f4e8fb2875beed632339eE.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/Sda224f380aff4c31ac6cdea790e75893O.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S413a872b0ca848e1aa7adb38f4a83fc6N.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S2b03143da6f94c55aa9aab58df5939a3D.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/Sd49beaddc5814d4e91fbfdd8f75408e6L.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/Sd1479984a8064f2092065008f94d6fdfn.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/S5c5ca1716ac94d619eade7a8631af0535.webp?v=1777966288\" alt=\"\" loading=\"lazy\" decoding=\"async\"\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e","brand":"FNIRSI","offers":[{"title":"SWM-20","offer_id":47724394316034,"sku":"SWM-20","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0636\/7674\/3938\/files\/Sae4e40c2aad240329a2e3ddf2d99d73cx.webp?v=1777966288","url":"https:\/\/tufzen.com\/products\/fnirsi-swm-20-portable-spot-welder-double-pulse-battery-welding-machine-18650-battery-diy-pack-welding-tool-0-5mm-nickel-chip","provider":"TUFZEN","version":"1.0","type":"link"}