{"product_id":"801d-spot-welder","title":"Pulse Spot Welder 801D","description":"\u003cp\u003e\u003cstrong\u003e801D Capacitor Energy Storage Pulse Spot Welder — for 18650, 21700 \u0026amp; Battery Pack Building\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 801D is a dedicated battery spot welder built specifically for welding nickel strip onto 18650, 21700, 14500, and LiFePO4 cylindrical cells. It uses capacitor energy-storage pulse technology to deliver a precise, high-current weld in milliseconds — clean results, no blackening, no circuit tripping, and no damage to the cell underneath. This is a best-selling model and the go-to choice for DIY battery builders, e-bike pack assemblers, solar storage builders, and battery repair shops.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy the 801D?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e14.5 KW peak pulse power from dual super-capacitor core — fires in milliseconds with zero grid interference\u003c\/li\u003e\n\u003cli\u003eWelds pure nickel strip 0.05–0.3 mm and nickel-plated strip up to 0.4 mm directly onto 18650 cells\u003c\/li\u003e\n\u003cli\u003eAlso welds aluminum-nickel composite sheet onto LiFePO4 prismatic aluminum electrodes (0.05–0.15 mm)\u003c\/li\u003e\n\u003cli\u003e2 welding modes: AT (automatic trigger, hands-free for high-volume pack building) and MT (foot pedal, for precision and parameter tuning)\u003c\/li\u003e\n\u003cli\u003e99-level energy adjustment — dial in the exact output for each strip thickness and cell type\u003c\/li\u003e\n\u003cli\u003eLED display shows welding power, capacitor voltage, and live instantaneous current during each weld\u003c\/li\u003e\n\u003cli\u003eCompatible with both 73B mobile welding pen and 73SA push-down welding arm — both included\u003c\/li\u003e\n\u003cli\u003eAluminum alloy housing for heat dissipation — rated for up to 12 hours of continuous use without overheating\u003c\/li\u003e\n\u003cli\u003eUniversal 100–240 V input — works on standard U.S. outlets, no step-down transformer needed\u003c\/li\u003e\n\u003cli\u003eCompact and lightweight — smaller and lighter than traditional AC transformer welders, easy to take to the job site\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal For\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDIY 18650 \/ 21700 battery pack building for solar storage, e-bikes, power tools, and electric vehicles\u003c\/li\u003e\n\u003cli\u003eLiFePO4 battery module assembly with nickel-aluminum composite strip\u003c\/li\u003e\n\u003cli\u003eBattery repair and rebuilding shops doing volume welding with AT mode\u003c\/li\u003e\n\u003cli\u003eSchools, makerspaces, and labs teaching battery pack assembly\u003c\/li\u003e\n\u003cli\u003eAny application requiring clean, consistent nickel strip welds on cylindrical lithium cells\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e801D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePulse Power (Peak)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.5 KW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWelding Energy (Peak)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e290 J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.8 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 100–240 V, 50\/60 Hz (universal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnergy Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–99 levels (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrigger Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAT (automatic) \/ MT (foot pedal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWelding Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePush-down arm \/ Mobile welding pen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePulse Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–20 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePreload Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200–500 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAdapter Input (Peak)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 V, 2–3 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20–30 minutes (first use \/ after full discharge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e73B Pen — Pure Nickel Strip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.05–0.3 mm onto 18650\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e73B Pen — Nickel-Plated Strip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1–0.4 mm onto 18650\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAl-Ni Composite Strip (LFP)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.05–0.15 mm onto aluminum electrode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED — shows power level, capacitor voltage, live weld current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e176 × 67 × 126 mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~1.85 kg (machine only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1× 801D Spot Welding Machine\u003c\/li\u003e\n\u003cli\u003e1× 73B Mobile Welding Pen\u003c\/li\u003e\n\u003cli\u003e1× 73SA Push-Down Welding Arm\u003c\/li\u003e\n\u003cli\u003e1× Foot Pedal Switch\u003c\/li\u003e\n\u003cli\u003e1× Power Adapter (15 V)\u003c\/li\u003e\n\u003cli\u003e1× Power Cord (US plug)\u003c\/li\u003e\n\u003cli\u003eSpare Welding Pins (for 73B pen)\u003c\/li\u003e\n\u003cli\u003eSpare Welding Needles (for 73SA arm)\u003c\/li\u003e\n\u003cli\u003e1× Hex Key Set\u003c\/li\u003e\n\u003cli\u003e1× User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFull Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWelding nickel strip onto lithium cells is a precision task — too little energy and you get a cold weld that pulls off under vibration; too much and you damage the cell's internal structure or burn through the strip. The 801D solves this with capacitor energy-storage pulse technology: it charges two super-capacitors gradually from a standard wall outlet, then releases that energy in a single millisecond burst. The result is a weld that is metallurgically sound, cosmetically clean, and cell-safe every time.\u003c\/p\u003e\n\u003cp\u003eUnlike traditional AC transformer welders that draw surge current directly from the line — causing breaker trips and inconsistent welds under varying grid conditions — the 801D is fully decoupled from the grid at the moment of the weld. You can run it in a garage, a van, a storage room, or anywhere with a standard 100–240 V outlet.\u003c\/p\u003e\n\u003cp\u003eThe dual-mode trigger system is a genuine production feature. AT mode fires automatically the moment the welding pins make proper contact with the strip — no button press, no foot pedal, just position and touch. For builders assembling hundreds of cells into a large pack, this cuts build time dramatically. MT mode hands control back to the foot pedal, giving you full timing control for debugging a new strip thickness, working in tight quarters, or welding onto an irregular surface.\u003c\/p\u003e\n\u003cp\u003eThe 73B mobile welding pen ships with a self-balancing spring mechanism that distributes pressure evenly across both pins — critical for getting consistent weld depth on a cylindrical cell. The 73SA push-down arm locks into the base for stationary work on a flat pack or fixture. Both tools are compatible with 7-series replacement pin system, so consumables are easy to source.\u003c\/p\u003e\n\u003cp\u003eWhether you're building a 48 V e-bike battery, assembling LiFePO4 cells for a solar storage cabinet, or rebuilding a power tool pack, the 801D covers the full nickel-strip welding workflow. It's the right tool for the job — purpose-built for exactly this use case, not an upsell with features you won't use.\u003c\/p\u003e","brand":"OGSolarStore","offers":[{"title":"Default Title","offer_id":46333532602518,"sku":null,"price":329.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0459\/7609\/2822\/files\/111__48977.jpg?v=1775657081","url":"https:\/\/ogsolarstore.com\/products\/801d-spot-welder","provider":"OGSolarStore","version":"1.0","type":"link"}