{"product_id":"18650-21700-spot-welding-fixture-battery-assembly-bracket","title":"18650 \u0026 21700 Spot Welding Fixture – Battery Assembly Bracket","description":"\n\u003ch2\u003e18650 \u0026amp; 21700 Battery Spot Welding Fixture – Precision Assembly Bracket\u003c\/h2\u003e\n\u003cp\u003eTake your DIY battery pack builds to the next level with this professional-grade spot welding fixture. Designed specifically for 18650 and 21700 lithium battery cells, this PLA plastic assembly bracket holds your batteries firmly in place during spot welding, ensuring consistent, accurate welds every time — no slipping, no misalignment.\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love This Fixture\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Precision:\u003c\/strong\u003e Engineered to professional standards, this fixture keeps battery cells perfectly aligned so every weld is clean, consistent, and reliable.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Fits both popular 18650 and 21700 cylindrical lithium battery cell formats — ideal for battery pack assembly, e-bike packs, power tool batteries, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafe Construction:\u003c\/strong\u003e Made from high-quality PLA plastic with no high-concern chemicals — safe for workshop and home DIY use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Long-Lasting:\u003c\/strong\u003e PLA construction provides a sturdy, lightweight, and durable hold that stands up to repeated use in your projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Easy to Use:\u003c\/strong\u003e At just 16.2 × 7.7 × 3 cm, it's compact enough to fit into any workspace and simple enough for beginners and experienced builders alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e PLA Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Battery Types:\u003c\/strong\u003e 18650 \/ 21700 Lithium Cells\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 16.2 × 7.7 × 3 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e 1× Spot Welding Fixture (batteries not included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDIY lithium battery pack assembly\u003c\/li\u003e\n  \u003cli\u003eE-bike, e-scooter \u0026amp; power tool battery builds\u003c\/li\u003e\n  \u003cli\u003eHome workshop spot welding projects\u003c\/li\u003e\n  \u003cli\u003eHobbyists, makers, and electronics enthusiasts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLooking to round out your DIY toolkit? Check out these related products from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-4-inch-npt-nickel-plated-brass-air-compressor-tank-fill-valve\"\u003e1\/4\" NPT Nickel Plated Brass Air Compressor Tank Fill Valve\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-shank-wire-twister-drill-attachment-rebar-tie-tool\"\u003e1\/4\" Hex Shank Wire Twister Drill Attachment | Rebar Tie Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on safe battery handling practices, visit the U.S. Consumer Product Safety Commission – Lithium Battery Safety.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Color may vary slightly from images due to monitor brightness and lighting conditions. Please allow minor measurement deviations of ±1–2 mm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What battery sizes does this spot welding fixture support?\u003c\/h4\u003e\n\u003cp\u003eA: This fixture is designed to securely hold both 18650 and 21700 cylindrical lithium battery cells, making it versatile for a wide range of DIY battery pack projects including e-bikes, power tools, and custom battery builds.\u003c\/p\u003e\n\u003ch4\u003eQ: Is a spot welder included with this fixture?\u003c\/h4\u003e\n\u003cp\u003eA: No — this listing includes only the PLA plastic assembly bracket\/fixture (1 piece). Batteries and spot welding equipment are sold separately. The fixture is designed to work with most standard spot welding setups.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the PLA material safe to use in a welding environment?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The fixture is made from high-quality PLA plastic, which contains no high-concern chemicals. It is intended to hold batteries in place during spot welding rather than being directly exposed to welding heat, making it safe for standard workshop use.\u003c\/p\u003e\n\u003ch4\u003eQ: What are the dimensions of this welding fixture?\u003c\/h4\u003e\n\u003cp\u003eA: The fixture measures 16.2 × 7.7 × 3 cm, making it compact and easy to work with on any standard workbench or in a small home workshop.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What battery sizes does this spot welding fixture support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This fixture is designed to securely hold both 18650 and 21700 cylindrical lithium battery cells, making it versatile for a wide range of DIY battery pack projects including e-bikes, power tools, and custom battery builds.\"}}, {\"@type\": \"Question\", \"name\": \"Is a spot welder included with this fixture?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — this listing includes only the PLA plastic assembly bracket\/fixture (1 piece). 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