12V DIY Portable Spot Welding Machine Battery Storage PCB Circuit Board

The DIY Portable 12V Battery Spot Welding Machine PCB Board is a must-have tool for makers and engineers building or repairing custom lithium battery packs. Designed to utilize a high-discharge 12V battery (like a car battery or a 3S LiPo) as its power source, this energy storage spot welder delivers powerful, concentrated current to perfectly fuse nickel strips onto 18650, 26650, and 32650 cells. If you are assembling a custom EV battery, power bank, or a robotics power supply, this module provides a reliable and cost-effective solution without the bulk of traditional industrial welders.

This PCB is engineered with multiple high-power MOS tubes to handle intense pulse currents, ensuring your welds are strong, clean, and highly conductive. It features thick copper terminals and heavy-duty cables to minimize resistance and heat generation during operation. The board includes a built-in buzzer, an easy-to-use button for adjusting the welding pulse gears, and straightforward connection pads. Buy online in India to upgrade your workbench, and easily hook it up using a standard circuit diagram to start building professional-grade battery packs.

Features:

• High Current Output: Employs an array of robust MOS tubes to deliver exceptional momentary welding current for secure spot welds.
• Wide Cell Compatibility: Perfect for welding 0.1mm to 0.15mm nickel strips onto standard 18650, 26650, and 32650 cylindrical lithium batteries.
• 12V Input Design: Operates efficiently when powered by a 12V 20AH-65AH lead-acid battery or a high-discharge (min 45C) 3S/4S LiPo battery pack.
• Adjustable Power Gears: Features multi-level power adjustment for precise control over welding intensity based on the thickness of your nickel strips.
• Heavy-Duty Wiring: Comes equipped with thick, high-current input wires and copper lugs to safely handle extreme pulse currents.
• Audible Alerts: Features an onboard active buzzer to provide clear operational feedback and gear-change indications.

Package Includes:

1 x DIY Portable 12V Battery Spot Welding Machine PCB Circuit Board

2 x Input Power Cables

2 x Spot Welding Pens (with wire)