AWithZ UF20B Capacitor Battery Spot Welder – 10.5KW, 3-in-1 Auto/Manual/Foot Pedal

Overview

The AWithZ UF20B Capacitor Battery Spot Welder is a compact, high‑power tool designed for building and reinforcing battery packs and sheet joints. With a 10.5KW peak pulse and built‑in energy storage, it balances robust performance with reliable control, making it suitable for both professional settings and ambitious DIY projects.

Three–in–one versatility for flexible use

Switch between Auto for quick setups, Manual for precise adjustments, or Foot Pedal for hands‑free operation as you position components. The welding pen includes a dedicated output button for easy control in manual mode, and the pedal helps maintain steady workflow during longer sessions.

• 5‑minute quick start: connect to a wide 100‑240V input with the included 15A high‑current adapter and confirm welding readiness on the display.
• Three operation modes: Auto for rapid results, Manual for fine tuning, and Foot Pedal for hands‑free control.

Material range, precision, and control

Designed to handle cylindrical cells such as 18650, 14500, and 21700, as well as LiFePO4 packs and nickel‑plated sheets. With 99 adjustable gears, you can tailor weld currents and pressures to different material combinations, typically accommodating up to 0.4 mm when combining sheets and tabs for clean, repeatable welds.

• Supports a variety of batteries and metal substrates for versatile builds.
• Numerous gear settings enable tailored welding across materials and thicknesses.

Power, safety, and thoughtful design

Built‑in ultracapacitors provide strong, repeatable pulses while the main power supply keeps the system stable. The exterior features rounded corners and an aluminum alloy shell with flame‑retardant properties, delivering a comfortable touch and added safety in busy work environments.

What’s included and how it helps you

• UF20 spot welding machine with charger cable
• Foot pedal and a removable welding pen with replaceable tip
• Two meters of nickel‑plated sheet, user file, and a manual
• Well‑matched components in a refined package that’s ready to use out of the box

Whether you’re upgrading a workshop or pursuing a personal battery project, this welder emphasizes practical features, dependable energy delivery, and straightforward setup. It presents a path to efficient, repeatable spot welding without asserting guarantees, focusing on possibilities and real‑world utility for professionals and dedicated hobbyists alike.