AxonZelo 4000A Dual-Capacitor Battery Spot Welder

High-Power 4000A Peak Dual-Capacitor Spot Welder

Designed for demanding battery-pack assembly and repair. The AxonZelo welder uses two 1500F capacitors and precise single- or dual-pulse control for 18650, 21700 and 32140 battery projects.

Key Features

• Up to 4000A peak welding current
• Dual 1500F capacitor design
• 6V rated welding system, 12V input and 6V/16A charging
• 35 mm² high-current welding cables
• Adjustable Pulse 1, interval, Pulse 2 and automatic trigger delay

Tested Welding Capability

• Nickel-plated steel: 0.1–0.6 mm
• Pure nickel: 0.1–0.4 mm
• Aluminum-nickel strip: 0.1–0.3 mm
• Copper for 18650/21700 packs: 0.15–0.25 mm
• For 32140 cells: weld a 0.15 mm nickel-plated base layer first, then weld 0.15 mm nickel-plated strip over 0.2 mm copper

Copper note: 0.15 mm nickel-plated strip over 0.25 mm copper was more reliable than 0.2 mm nickel-plated strip over 0.25 mm copper. Results vary with material, surface condition, probe pressure and settings.

Suggested Starting Settings

Pulse 1 / Interval / Pulse 2 / Voltage

• 0.10 mm nickel-plated: 2 / 0 / 0 / 6V
• 0.12 mm: 4 / 0 / 0 / 6V
• 0.15 mm: 5 / 0 / 0 / 6V
• 0.20 mm: 7 / 0 / 0 / 6V
• 0.30 mm: 16 / 0 / 0 / 6V
• 0.10 mm nickel + 0.20 mm copper: 10 / 5 / 25 / 6V
• 0.10 mm nickel + 0.25 mm copper: 15 / 5 / 25 / 6V
• Multi-layer welding: 20 / 0 / 20 / 6V

Test on scrap material first and increase power gradually.

Package Includes

• 4000A dual-capacitor spot welder
• 12V 10A power adapter
• 4 spare welding needles
• US plug supplied as standard
• EU and AU plug adapters

Shipping

• Weight: 1.9 kg
• No. 6 shipping box
• Ships within 2 business days

Safety

This is a resistance spot welder. Press both probes firmly against the strip for full, gap-free contact before triggering. Poor contact can cause arcing, excessive heat, weak welds or damage. Wear eye protection and test settings carefully.