#High-performance practical tools

How do you use it

Pure copper and pure nickel stack-up! The result was so good I saved it right away! AWithZ P120D all-new supercapacitor energy-storage spot welder, 69.2kw, up to 2.0mm #WeldingEquipment #GeekMods #GoodFinds #EquipmentReview #HighPerformanceTools

Welds 0.15MM nickel-plated with ease! H1 handheld spot welder — precise, stable, no cold welds! #AWithZSpotWelder #WeldingEquipment #diy #GoodFinds #HighPerformanceTools

Light and portable, a compact home welding wonder! H1 handheld dual-pulse spot welder makes everyday welding more efficient! #AWithZSpotWelder #WeldingEquipment #diy #GoodFinds #HighPerformanceTools

U3 Pro spot welder welding button cells: small body, big energy! #AWithZSpotWelder #WeldingEquipment #ElectronicsHobbyist #diy #HighPerformanceTools

[Unboxing] AWithZ P60F supercapacitor energy-storage spot welder — dual pulse, millisecond trigger, precision welding up to 1.00MM, a professional spot welder! #WeldingEquipment #ElectronicsHobbyist #CapacitorBlackTech #diy #HighPerformanceTools

HD2 handheld dual-pulse spot welder · HD digital display. HD2 handheld dual-pulse spot welder · HD digital display — welds as fine as silk, control down to the millimeter Grade-A cells · 0.25mm ultra-thin welding · copper sheet welds with ease · handheld and portable · precise digital display #AWithZSpotWelder #WeldingEquipment #ElectronicsHobbyist #diy #HighPerformanceTools

[Operation guide] HD2 handheld dual-pulse spot welder (HD digital-display version) — spot welds in a second, precise and error-free! Beginners get professional results too~ welds 0,25MM #AWithZSpotWelder #WeldingEquipment #ElectronicsHobbyist #diy #HighPerformanceTools

Nickel-plated strip welds with ease! Precise control, solid welds without damaging the material. UF20B all-new supercapacitor spot welder — welds copper, welds 0.4mm #AWithZSpotWelder #WeldingEquipment #ElectronicsHobbyist #diy #HighPerformanceTools

One weld with the UF20B and you're hooked! A finished product really is better~ beats a home-made welder! UF20B all-new supercapacitor spot welder — welds copper, welds 0.4mm #AWithZSpotWelder #diy #WeldingEquipment #ElectronicsHobbyist #HighPerformanceTools

Copper hard to weld? The UF20B handles it easily. Copper hard to weld? The UF20B handles it easily. UF20B all-new supercapacitor spot welder: welds copper, welds 0.4mm #AWithZSpotWelder #ElectronicsHobbyist #diy #HighPerformanceTools #GoodFinds

DIY power bank? The U3Pro welds fast and strong. U3 Pro spot welder — welds copper, welds 0.35mm #AWithZSpotWelder #ElectronicsHobbyist #diy #HighPerformanceTools #GoodFinds

Tough steel strip? One weld from the UF20B and it yields. UF20B all-new supercapacitor spot welder: welds copper, welds 0.4mm #AWithZSpotWelder #ElectronicsHobbyist #diy #HighPerformanceTools #GoodFinds

Steel strip too tough? One weld from the UF20B and it gives in. UF20B all-new supercapacitor spot welder — welds copper, welds 0.4mm #AWithZSpotWelder #ElectronicsHobbyist #diy #HighPerformanceTools #GoodFinds

HD2 handheld welding — steady, accurate, ruthless! Dual-pulse welding handles any job #AWithZSpotWelder #WeldingEquipment #diy #HighPerformanceTools #ElectronicsHobbyist

Take it on business trips / camping! No panic over sudden repairs — a palm-sized spot welder is your mobile toolbox! #AWithZSpotWelder #ElectronicsHobbyist #HighPerformanceTools #ApplianceRepair #diy

Up and running in 3 seconds, no learning needed! Dual-pulse millisecond welding, start from zero — even a beginner can master precision welding! #AWithZSpotWelder #ElectronicsHobbyist #HighPerformanceTools #ApplianceRepair #diy

Weld circuits, fix toys, mod models… one machine does it all! Students save on living costs, parents save on repair bills! #AWithZSpotWelder #ElectronicsHobbyist #HighPerformanceTools #ApplianceRepair #diy

Making a Worx high-drain battery from three Sony C6 cells (specs shown). When spot welding, because the nickel strip is fairly thin, tap lightly, then tap again; the finished welds ‘look a bit ugly’; multimeter reads 12.6V, full; the gaps are filled with glue to hold it; Sony C6 3.0 (Ah) done. Comments ask how much the welder is and what brand, what glue (creator liked it), whether a 12V drill can use it; someone says this welder can’t do 26700, not even 1.0 nickel-plated steel strip; and whether a broken, unsoldered thermistor lead matters.

The creator introduces the AWithZ compact spot welder UF20B: supercapacitor inside, lighter and smaller than a traditional transformer welder, with big instantaneous power and high efficiency; the nameplate gives max output current 1750A, output power 10.5kW, input 100–240V. It comes with two welding pens (very thick leads), a switch for auto / manual, and a trigger port for a foot switch. In the test: gear 15 welds nickel strip onto a cell’s negative end — the welds look clean with no blackening, can’t be pulled off by hand, and pliers tear the nickel strip apart; switching to thick nickel strip at gear 28 on an old cell’s positive end is just as solid, the strip tears before the weld; dozens of welds in a row with no problem. Summary: 99 gears to choose from, suits nickel strip of different materials and thicknesses (up to 0.4mm), with over-temperature and discharge protection. In the comments the creator replies that a higher-power model that welds 1mm is in the shop window.

The creator bought the latest AWithZ H2 handheld welder to build his own packs. In the box are two parts boxes: 2 spare welding pins + a Type-C charging cable; practice nickel-plated steel strip; a manual and a card (read carefully, mind the precautions). Safety reminder: welders and lithium batteries are both somewhat dangerous, wear goggles. The body is pen-sized, with a built-in lithium battery, Type-C charging and a color screen showing the parameters; two welding pins; a Type-C port and two buttons at the back (the select key combines several functions), model and power on the rear label. Principle: a momentary heavy current through the resistance heats the metal instantly so it fuses — unlike a soldering iron; the nickel-plated steel strip on 18650/21700 cells takes solder badly, and lithium cells hate heat. Long-press to power on; the color screen shows weld mode, trigger time, gear and preheat time; short-press to step through settings, the up key enters the menu; beginners should keep the factory defaults; gears 1–10 map to different thicknesses, and gear 8 is more than enough for the thin sheet in hand — it punches through. Demo: the two pins touch the sheet for an instant — a flash of sparks; wood underneath gets a burn mark and smoke; the weld is flat and takes no room, and pulling hard won’t separate it; then a demo on 4 × 18650, and if a weld is not solid enough, add a few more.