Portable Mini 18650 Spot Welder – Cordless, with 5000mAh Battery & LCD Display

The Portable Mini 18650 Spot Welder is a compact, cordless, and intelligent tool designed specifically for assembling and repairing lithium-ion battery packs. Its built-in 5000mAh lithium-polymer battery and USB Type-C charging provide true portability, allowing for up to 800 welds on a single charge. The advanced dual-pulse output system ensures clean, strong, and consistent spot welds on nickel strips (0.1–0.2mm) for 18650, 21700, and other battery cells. With an intuitive LCD display, 80 adjustable power levels, and automatic operation triggered by electrode contact, it is the perfect solution for DIY enthusiasts, RC modelers, and technicians working on power banks, e-bike batteries, and portable device repairs.

Key Features

• True Cordless Portability – Integrated 5000mAh battery provides freedom from power outlets, enabling up to 800 welding cycles per charge and operation anywhere.
• Precision Dual-Pulse Welding Technology – Delivers two controlled current pulses for stronger, more stable, and reliable welds on nickel strips, minimizing heat damage to battery cells.
• Smart Automatic Operation – Automatically initiates the welding pulse upon detecting contact between the electrodes and the workpiece, simplifying the process and ensuring consistency.
• Advanced User Interface – Features a clear 0.96-inch LCD display showing power level, mode, voltage, and status, with 80 adjustable power settings for fine-tuned control.
• Modern USB Type-C Charging – Conveniently charges via a standard 5V/2A USB-C charger and supports pass-through operation (use while charging).
• Compact & Ergonomic Design – Lightweight (350g) and handheld size (251x58x25mm) allows for precise work in tight spaces and easy storage.
• Energy Efficient & Safe – Includes auto-shutdown after 6 minutes of inactivity and built-in protections against overcharging and short circuits.

Specifications

• Type: Portable Handheld Spot Welder
• Power Supply: Built-in 5000mAh Li-Po Battery (USB Type-C Charging)
• Max. Output Current: 800 A
• Welding Material: Nickel Strip (0.1 – 0.2 mm thickness)
• Control: LCD Display, 80 Power Levels
• Welding Mode: Automatic (Contact Detection)
• Charging: 5V / 2.1A via USB Type-C
• Weight: 350 g
• Key Features: Dual-Pulse Output, Cordless, Auto Start, LCD Display