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Key Feature
- HIGH POWER TRANSFORMER INVERTER SPOT WELDER – SUNKKO 737U battery spot welding machine delivers stable pulse welding performance for lithium battery pack assembly, 18650 battery welding, nickel strip welding, and battery repair applications.
- PRECISION PULSE WELDING CONTROL – Equipped with intelligent microcomputer control system and adjustable welding current for accurate, reliable, and consistent spot welding results on nickel-plated and pure nickel sheets.
- DUAL WELDING MODES FOR FLEXIBLE USE – Supports fixed welding head and mobile spot welding pen operation, making it suitable for battery pack building, portable power stations, electric bike batteries, and DIY lithium battery projects.
- ADJUSTABLE MULTI-PULSE WELDING SETTINGS – Features single/double pulse and multi-pulse welding options with adjustable welding parameters to improve weld strength, reduce sparks, and enhance welding quality.
- WIDE APPLICATION & DURABLE DESIGN – Ideal for welding 18650/21700/26650 battery packs, circuit boards, stainless steel mesh, nickel strips, and portable charger batteries; compact industrial-grade construction designed for long-term professional use.
₹8,714.00
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## SUNKKO 737U Battery Spot Welder – Transformer Inversion Pulse Welding Machine
The SUNKKO 737U Battery Spot Welder is a compact and efficient transformer inversion pulse welding machine specially designed for lithium battery pack assembly, mobile power bank production, and precision nickel strip welding applications. Combining spot welding, battery testing, and charging functions in one integrated unit, the 737U is an ideal solution for DIY users, repair workshops, and small-scale battery manufacturers.
Built with intelligent microcomputer-controlled pulse welding technology, the SUNKKO 737U delivers stable welding current output and accurate pulse control for reliable welding performance. The machine supports welding of 18650, 14500, and other cylindrical lithium battery cells using pure nickel and nickel-plated strips. Its compact desktop design makes it suitable for battery maintenance, portable power station assembly, and electronics repair work.
The 3-in-1 integrated design combines spot welding, charging, and battery testing functions, helping users improve efficiency while reducing workspace requirements. Adjustable charging current and real-time operation functions make the machine practical for battery pack production and maintenance tasks.
Community discussions around the SUNKKO 737 series highlight that these transformer-based welders are popular entry-level and mid-range options for lithium battery pack building, especially for 0.1–0.15mm nickel strip applications. Users commonly recommend stable wall power supply connections and proper electrical protection for best welding performance.
### Key Features:
- Transformer inversion pulse spot welding technology
- 3-in-1 machine: Welding + Testing + Charging
- Compact desktop battery spot welder
- Intelligent microcomputer-controlled welding system
- Stable high-current pulse welding output
- Adjustable charging current function
- Suitable for 18650 and lithium battery pack assembly
- Precise nickel strip welding performance
- Easy operation for DIY and industrial use
- Compact and portable industrial design
### Applications:
- 18650 lithium battery pack building
- 14500 / 21700 battery welding
- Portable power bank assembly
- Laptop battery repair
- Drone and UAV battery production
- DIY battery projects
- Electronics repair workshops
- Small-scale battery manufacturing
The SUNKKO 737U is an ideal entry-level and professional compact spot welding machine for users looking for reliable transformer pulse welding performance for lithium battery pack assembly, battery maintenance, and portable power applications.
Product overview
## SUNKKO 737U Battery Spot Welder – Transformer Inversion Pulse Welding Machine The SUNKKO 737U Battery Spot Welder is a compact and efficient transformer inversion pulse welding machine specially designed for lithium battery pack assembly, mobile power bank production, and precision nickel strip welding applications.
- SKU
- 26000632
- Category
- Spot Welding
- Brand
- Sunkko
- Unit
- PCS
- Minimum order
- 1 PCS
- Availability
- Out of Stock
Review key features and technical specifications before ordering. Contact ARB Accessories if you need compatibility or bulk-order guidance.
Datasheet
Datasheet