5000W Handheld Spot Welder – DIY 18650 Battery Welding Machine

5000W Handheld Spot Welding Machine – DIY Battery Welder for 18650 Cells

Take your DIY battery pack projects to the next level with this powerful 5000W Handheld Spot Welding Machine. Designed for makers, engineers, and hobbyists, this compact yet high-performance spot welder delivers precise, consistent welds on nickel strips for 18650 lithium battery assemblies. With adjustable current output and a foot-switch trigger, you get hands-free control and repeatable results every time.

Made in Mainland China.

Key Features

• 5000W Output Power – Handles nickel strip welding from 0.1mm to 0.15mm with ease
• Adjustable Current Control – Dial knob lets you fine-tune output for different welding thicknesses
• Pure Copper Detachable Soldering Pen – Superior conductivity with replaceable welding needles
• Foot-Switch Triggered – Frees both hands for precise positioning of nickel sheets and battery cells
• Digital Display – 0.28" digital tube screen shows current settings at a glance
• Built-in 4000mAh / 60C Battery – Cordless operation for flexible use anywhere in your workshop
• Wide Input Voltage – AC 100–240V, 50/60Hz for worldwide compatibility
• ABS Shell Construction – Lightweight, durable housing for handheld portability

Specifications

Automatic Current Adjustment Guide

• Welding 0.1mm nickel strip → Set current to position 5
• Welding 0.15mm nickel strip → Set current to position 6

How to Use

1. Power On: Turn the knob — the indicator light flashes 3 times and stays on to confirm startup.
2. Set Current: Adjust the dial knob to your desired output level based on nickel strip thickness.
3. Position & Weld: Place the nickel strip on the 18650 battery, hold both welding pins firmly on the strip, then press and hold the foot switch. After 3 red flashes, the current is delivered and the weld is complete.
4. Shutdown: Turn the knob to the off position.

Important Safety Notes

• Avoid using the machine while it is charging to protect the battery.
• Allow the soldering pen to cool before continuing if it becomes too hot.
• Recharge the battery when voltage drops below 7.3V.
• Use only in ambient temperatures between 10°C and 65°C.
• Keep away from water and moisture at all times.
• Do not allow the two welding pins to touch each other during operation.
• Regularly inspect the welding needles for carbon deposits; clean with a file or fine sandpaper as needed.

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Frequently Asked Questions

Q: What battery cell types can this spot welder work with?

A: This 5000W spot welding machine is specifically designed for welding nickel strips onto 18650 lithium battery cells, making it ideal for DIY battery pack assembly, e-bike battery builds, and power tool battery projects.

Q: Can the welding needles be replaced on this model?

A: Yes! Unlike 3500W models where the welding needle is fixed, the 5000W version (Model 560) features a detachable welding pen with fully replaceable welding needles, giving you longer tool life and more flexibility.

Q: Can I use this spot welder while it is charging?

A: It is strongly recommended to avoid using the machine while charging. Doing so can stress and potentially damage the built-in 4000mAh battery. Always charge fully before your welding session for best performance.

Q: What thickness of nickel strip can this machine weld?

A: The 5000W spot welder is optimized for nickel strips between 0.1mm and 0.15mm in thickness. Simply adjust the current dial to position 5 for 0.1mm and position 6 for 0.15mm strips.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.