TK-20P Portable Battery Spot Welder 10000W Dual Pulse, LCD Display, Auto/Manual Modes, Foot Pedal, 0.1–0.3mm Nickel Strip Welding

Build and repair battery packs with more control using this portable dual-pulse spot welder designed for nickel strip welding. It’s ideal for DIY battery pack assembly and electronics repair where soldering can overheat cells or damage insulation. Spot welding creates strong electrical connections quickly by applying short, controlled pulses through welding pens/electrodes, making it the preferred method for joining nickel strips to cylindrical cells in many battery projects.

This unit supports dual-pulse welding to help produce cleaner, more repeatable welds. Dual-pulse output can improve bonding on nickel strip by delivering controlled energy in two stages, which can help reduce splatter and burn-through—especially useful when working with thinner strips or when dialing in settings for different materials. The welder offers both Auto and Manual modes: Auto mode can speed up repetitive welding tasks by triggering when contact is detected (depending on the model behavior), while Manual mode allows deliberate triggering for careful positioning.

An LCD display provides a straightforward interface to select welding power and mode, making it easier to match settings to your strip thickness and project needs. The included foot pedal adds an extra layer of convenience, allowing hands-free activation so you can focus on holding the electrodes steady and aligning strips accurately.

This spot welder is commonly used for:

• Battery pack building (18650 / 21700 / 26650 configurations)
• Nickel strip/tab welding for power tool packs and DIY energy storage
• Repair work on battery connections and tab replacements
• Prototyping and workshop fabrication where consistent welds matter

For best results, use clean nickel strip (pure nickel preferred for low resistance), ensure the electrode tips are clean, maintain firm consistent pressure, and start with lower power then increase gradually until you achieve strong weld nuggets without discoloration or holes. Always follow safe battery handling practices, work in a ventilated area, and wear eye protection when welding.

Specifications

• Product Type: Portable battery spot welding machine
• Output Type: Dual pulse spot welding
• Modes: Auto mode / Manual mode (trigger behavior depends on model)
• Display: LCD screen for settings and mode selection
• Activation: Welding pens/cables + optional foot pedal trigger
• Recommended Welding Material: Nickel strip / battery tabs
• Supported Strip Thickness (Typical): 0.1–0.3 mm (depends on material and settings)
• Use Cases: Battery pack assembly, battery repair, DIY electronics fabrication
• Power Rating: 10000W (manufacturer-rated/peak specification; real performance depends on input power and setup)
• Notes: Actual weld capability varies by strip type (pure nickel vs plated steel), cell surface condition, pressure, and selected power.

If you need a practical, workshop-friendly spot welder for battery pack projects, this dual-pulse LCD unit gives you flexible control (auto/manual), convenient foot pedal triggering, and portable bench operation for consistent results.

Included Components
Spot welder, weld pen leads, foot pedal, USB cable, tips/accessories