AWithZ UF20B

10.5kW supercapacitor power, welds 0.4mm and copper

U-series flagship: 10.5kW / 1750A, 2×1000F actively-balanced supercapacitors, 40-second recharge at 15A, three trigger modes, 99 levels, welds 0.4mm nickel-plated steel and copper. 2-year warranty.

Buy now · ¥569.9–599.9 Specs

Before any lithium battery work, read the AWithZ Safety & Usage Guidelines ›

Details

UF20B

Only brand-new supercapacitors

No refurbished or imported salvaged capacitors — brand-new automotive-grade supercapacitors run at rated voltage for double safety and stability.

UF20B

10.5kW · 1750A · welds 0.4mm

Millisecond energy plus dual-pulse: Ni-plated/steel 0.4mm, pure nickel 0.25mm, copper 0.15mm (with flux).

UF20B

15A high-current fast charge

The supercapacitor recharges in seconds, so continuous welding never waits or fades.

UF20B

Three welding modes

AT auto mode (smart sensing, batch work) · MT hand-pen mode (precise triggering, fine work) · MT foot-switch mode (hands and feet together).

UF20B

Thousands of settings · six core parameters

Mode (manual/auto) · level · preheat · interval · trigger time · repeat — six dimensions combine into tens of thousands of output profiles, so thin sheets don't burn through and thick stock doesn't cold-weld.

UF20B

Smart hand-control pen

A manual button controls trigger timing anytime; removable alumina-copper pins swap without changing the shaft; the thick copper lead runs low-resistance and cool; the front-facing outlet avoids drag, with a 40cm working length.

UF20B

Smart balancing & voltage stabilization

2×1000F active balancing keeps output rock-steady — no cold welds, consistent every time, works with any battery.

UF20B

8-layer safety protection

Quality cells/capacitors · shock · voltage · short-circuit · low-temp · high-temp · overcharge · over-discharge protection; a built-in safety chip, thermal sensor and safety algorithm give hardware-plus-software protection.