Description
Product Overview
The SUNKKO 737G Battery Spot Welder is a professional resistance welding machine designed for precise welding of lithium battery packs, particularly 18650 battery cells. It uses adjustable welding electrodes to securely join nickel strips to battery terminals with consistent and reliable welds.
The welding pressure can be adjusted from 200g to 700g, allowing the machine to accommodate different battery and nickel-strip applications. The included foot pedal provides convenient hands-free operation while helping keep the battery and welding material stable during the welding process.
The SUNKKO 737G supports single and dual pulse welding, with adjustable welding current from 50A to 800A. This makes it suitable for different materials and nickel-strip thicknesses.
An integrated LED work light illuminates the welding area, making it easier to perform accurate welding even in areas with limited lighting.
Key Features
- 1.5KW high-power battery spot welding machine
- Designed for 18650 lithium battery pack assembly
- Single and dual pulse welding modes
- Adjustable welding current from 50A to 800A
- Adjustable welding pressure from 200g to 700g
- Supports nickel strips from approximately 0.05mm to 0.2mm
- Built-in LED welding-area illumination
- Convenient foot pedal control
- Digital display for welding current percentage
- Compact and professional design
- Suitable for nickel, stainless steel, iron, and similar materials
Technical Specifications
| Specification | Details |
|---|---|
| Brand | SUNKKO |
| Model | 737G |
| Type | Battery Spot Welder |
| Welding Principle | Resistance Welding |
| Rated Power | 1.5KW |
| Input Voltage | AC 220–230V |
| Frequency | 50Hz |
| Primary Current | 2A–25A |
| Welding Current | 50A–800A |
| Spot Welding Current | Up to 500A |
| Welding Pressure | 200g–700g |
| Welding Thickness | 0.05–0.2mm |
| Pulse Modes | 1 Pulse / 2 Pulses |
| Dimensions | 140 × 245 × 200mm |
| Weight | 5.5kg |
| Drive Form | Foot Pedal Control |
| Rated Duty Cycle | 50% |
| Application | 18650 Battery Pack Welding |
| Welding Materials | Stainless Steel, Iron, Nickel, etc. |
Welding Capability
- 1 pulse: approximately 0.05–0.12mm nickel plate
- 2 pulses: approximately 0.12–0.20mm nickel plate
- Adjustable welding current: 0–99%
- Electrode distance from front panel: 36mm
Package Contents
- SUNKKO 737G Spot Welder
- Foot Pedal Control
- Battery Holder
- 4 × Welding Needles
- Hex Wrench
- 2 × Fuse Tubes
- 60 × Nickel-Plated Strips — 0.1 × 4 × 100mm
- English User Manual



















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