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DC 4-12V DIY Spot Welder Pen Handheld Automatic Welder

Specification	Details
Product Type	Handheld Spot Welding Pen
Working Voltage	DC 4V – 12V
Required Current	≥800A
Trigger Type	Automatic Trigger Switch
Electrode Type	Concentric Ball-Point Needles
Application	18650 Battery Pack Welding

Price

🚚 Ships within 24 Hours
📦 Pan India Delivery

₹ 1,398.31

(Tax included)

बारकोड: 72551330

The DC 4–12V DIY Spot Welder Pen is a professional-grade handheld battery spot welding tool designed for assembling and repairing lithium battery packs. Featuring a dual-spring automatic trigger mechanism, thick brass construction, and concentric welding needles, this welding pen delivers stable current transfer, efficient heat dissipation, and reliable spot welding performance for 18650, 26650, and similar battery pack applications.

Key Features:

Automatic Trigger Operation enables convenient one-hand spot welding without requiring a foot switch.
Dual Spring Welding Mechanism allows independent electrode movement for improved welding pressure control.
Thick Brass Conductive Structure provides excellent current carrying capability and enhanced welding efficiency.
Concentric Ball-Point Needles help achieve accurate weld positioning and stable contact performance.
Optimized Heat Dissipation Design supports longer working sessions with improved thermal management.

Technical Details:

Product Type: Battery Spot Welding Pen
Working Voltage: DC 4V – 12V
Required Current: ≥800A
Trigger Type: Automatic Built-In Trigger
Electrode Type: Concentric Ball Welding Needles
Body Material:
- ABS Housing
- Brass Conductive Bars
Spring Type: Dual Independent Springs
Welding Method: Spot Welding
Suitable Battery Types:
- 18650 Lithium Cells
- 26650 Lithium Cells
- Battery Pack Nickel Strip Welding
Heat Dissipation: Integrated Fast Cooling Structure
Application:
- DIY Battery Pack Assembly
- Lithium Battery Repair
- Spot Welding Projects
- Battery Pack Manufacturing

Prototyping and Engineering Tips from Robogears:

Use a high-current capable battery source capable of delivering the required welding current for proper nickel strip bonding.
Keep welding needle tips clean and free from oxidation to maintain stable conductivity and strong weld quality.
Avoid holding the electrodes on the battery terminal for excessive time to prevent overheating and cell damage during spot welding.

Package Includes:

1 x DC 4–12V Handheld Spot Welding Pen
2 x Concentric Ball-Point Welding Needles
2 x Spring Set
1 x Hex Wrench

Disclaimer:

This product is a spot welding accessory and requires a compatible high-current spot welding power source for operation. It is intended for lithium battery pack assembly, DIY electronics, and industrial spot welding applications only. Improper use, excessive welding duration, or incorrect power connections may damage batteries, welding equipment, or cause safety hazards.