Mini Spot Welder Pen – 4-12V Automatic Trigger Welding Tool for 18650 DIY Battery Pack

Specifications:

1. Input Voltage: 4V to 12V DC
2. Working Current: ≥800A
3. Welding Type: Capacitor discharge, integrated copper head
4. Trigger Type: Built-in switch + automatic trigger
5. Material: Copper welding needle, high-conductivity
6. Color Options: Red, Black, White, Pink, Blue, Yellow, Orange, Green, Purple, Gray
7. Application: 18650/21700/26650 battery nickel strip welding
8. Included: Spot welder pen, hex key, extra springs, micro switches, welding needle

Description:

This Mini Spot Welder Pen is a compact and efficient tool designed for DIY lithium battery pack assembly. It supports automatic trigger mode and manual switch operation, making it suitable for both beginners and advanced users. With a wide input range of 4V to 12V and a high current of 800A, this welder provides strong, stable welds for nickel strips on 18650/21700 cells. Its ergonomic design ensures a comfortable grip, while the pure copper electrodes offer excellent conductivity and durability.

Application:

1. Ideal for assembling 18650/21700/26650 lithium battery packs
2. Perfect for DIY power banks, e-bike batteries, and tools
3. Suitable for welding nickel strips to battery terminals
4. Used in electronics repair, prototyping, and battery recycling
5. Great for hobbyists, makers, and battery builders