Color screen, dual pulse, gears 1–99, welds up to 0.25mm nickel-plated strip. This generation switches to new grade-A cells, with 40% more battery life than the last one. If yours has arrived, snap a photo of it on your desk, tag @AWithZ Official and add #MyH2 — we'll pick 10 people to get a 5-meter roll of nickel-plated strip.

In the lab we welded 30 spots each on the UF20B, UK1 and P60F and took the median of the pull tests. Copper needs flux — without it the welds basically won't hold. This got asked in the comments so many times that we just wrote it into the table. The table is on the "Parameters" page, filterable by cell × material × thickness.

Answer beginners' questions in Parameter Lookup and under works; judged by AWithZ staff and creators. Prizes: +100 points per quality answer · extra 300 points for the monthly Top 10 Deadline: 2026-11-30 · 0 entries so far

Revive one appliance or tool battery, documenting four steps: teardown, re-cell, spot weld, reassemble. Beginners encouraged. Prizes: H2-2026 ×3 · 5m nickel-plated strip ×20 Deadline: 2026-10-02 · 63 entries so far

Build a 21700 pack (≥4S) with any AWithZ spot welder and submit photos or video of the finished pack plus a recipe card. Judged on weld consistency, construction and safety (BMS, insulation). Prizes: 1st prize P60F ×1 · 2nd prize UF20B ×2 · 3rd prize welding-pin set ×10 Deadline: 2026-10-18 · 36 entries so far

Brushless motor turned monster fan, part 2 done. Installed + tested in one go, the sound takes off on the spot🔥 The spot welder locks the battery in solid — full throttle, spinning like mad, not budging an inch! This isn't a fan, it's a 'turbojet engine' strapped to your body… Take it out in summer — it works better than bringing an AC💨 #MonsterFan #BrushlessMotor #AWithZSpotWelder #UF20BSpotWelder #TechShenanigans

DIY monster fan | Hardcore conversion of a drone brushless motor into a monster fan🔥 Step-by-step tutorial, a spot welder builds super-strong airflow💨, enough wind to take off — the summer cooling wonder! #AWithZSpotWelder #UF20BSpotWelder #MonsterFan #DroneMotorMod #diy

Avoid the pitfalls in 1 minute! Beginners building a pack — 3 steps solve the core problems: set the series count ➜ set the parallel count ➜ lock in the BMS. With the AWithZ H2-2026 handheld, even a newbie can weld a finished-grade pack and get safely to the end🚗 #AWithZSpotWelder #BatteryMaking #DIY #BeginnerGuide #PitfallGuide

When 'handheld' meets 'supercapacitor', the limits of welding are redefined. AWithZ HF7 — the industry's first handheld capacitor spot welder, fully tested and revealed. #AWithZHF7 #Handheld #CapacitorSpotWelder #Battery

Ended — see the announcement for the winning entries. Prizes: P120D ×1 · UF20B ×3 Deadline: 2026-08-15 · 715 entries so far

Industry first, major launch! The all-new supercapacitor handheld HF7 spot welder is here! Not every handheld deserves to be called professional. Li-ion pack assembly, tool re-celling, model power mods — all done one-handed. Welds solid, lasts long, tunes precisely, no compromise. Stop settling — get it right in one step. Get in on the launch, keep watching👇 #AWithZSpotWelder #HF7 #HandheldSpotWelder #CapacitorSpotWelder

AWithZ UF20B spot welder | Solid welds on 32140, copper stays put. Still struggling with copper welds that won't hold? The AWithZ UF20B supercapacitor spot welder — output steady as a rock, not fussy about materials. Smart voltage regulation, no more cold welds, consistent weld spots. Punches through 0.15mm copper with ease; tear the copper strip and the weld stays. Hand-built Li-ion packs, done in one go. #32140Cells #AWithZSpotWelder #UF20B #Battery

Official

Everyone says copper won't weld? Brute strength works miracles! AWithZ UF20B supercapacitor spot welder — copper / pure nickel, all in, unedited footage; how would you score these welds?

Copper hard to weld? The UF20B just nails it! All-new supercapacitor + high-current burst — welds copper rock-steady, solid welds that don't come loose. Li-ion repair, battery PACK, industrial spot welding, batch processing — handles them all with ease; hardcore gear for professional work!

UK1 cordless portable spot welder, 9000W raging output! 1380A instant penetration. Click the knob, press the pen tip lightly, and the weld forms in an instant⚡ ✅0.3mm nickel-plated / 0.15mm pure nickel / 0.1mm copper, all handled with ease ✅Dual grade-A power cells for steady runtime and long life ✅Smart spot-welding pen — even beginners weld like seasoned pros DIY battery packs, repairs and mods, small-batch production — one unit does it all🛠️ #AWithZSpotWelder #CordlessSpotWelding #HardwareTools #DIYWonderTool

Say goodbye to the power cord! AWithZ UK1 cordless spot welder: precision welding / phone cell transplants / electronics repair / on-site repair / outdoor work. Turn the knob and get to work — weld wherever you go! #AWithZUK1 #CordlessSpotWelder #OnSiteRepairWonderTool #HardwareTools #GoodFinds

Stainless steel spatula 'broke a bone' — just toss it? The AWithZ handheld H1 spot welder gives it a 'seamless bone-setting'! Got a small item that needs rescuing? Tell me in the comments and I'll weld it next time! #RepairTips #StainlessSteelWelding #KitchenBlackTech #CraftMaster #AWithZSpotWelder

[Welding test] UF20B: palm-sized, with the strength of a thousand pounds. 0.2mm pure nickel sheet on an 18650 pack, solid welds, energy focused in an instant #AWithZSpotWelder #diy #CompactSpotWelder #GeekMods #ElectronicsHobbyist

[Unboxing moment] UF20B — a professional power station in your palm. No preheat needed, one-button stable welding, easy spot welding, enjoy the assurance of every precise weld! #AWithZSpotWelder #diy #CompactSpotWelder #GeekMods #ElectronicsHobbyist

The ultimate welding wonder for DIY players? Unboxing the AWithZ HD2 handheld dual-pulse spot welder! Li-ion pack assembly made easy #AWithZSpotWelder #BatteryDIY #Handmade #ToolNerd

Ultimate performance, precise welding! Ultimate performance, precise welding! The UF20B packs a high-energy supercapacitor, 10.5kW power output — even 0.15mm copper sheet welds perfectly! #ForCompactSpotWeldersChooseAWithZ #WeldingWonderTool #GeekMods #ElectronicsHobbyist

Light and powerful! U3 Pro spot welder masters 18650 packs! Home-made power bank~ #ForCompactSpotWeldersChooseAWithZ #WeldingWonderTool #ElectronicsHobbyist #GeekMods #diy 8-19

Welds you can't tear apart! Don't be fooled by the small size! H1 handheld spot welder, straight out of the box onto 18650 cells: welds you can't tear off — beginners, buy with eyes closed! #AWithZSpotWelder #EquipmentReview #ElectronicsHobbyist #HardwareTools #WeldingWonderTool

Brute-force output! 0.3 copper + 0.15 nickel-plated, nailed with ease! AWithZ P60F supercapacitor spot welder welds both materials steadily~ #BatteryWelding #diy #Electrician #Tools

UF20B welding 0.3 nickel-plated — the graduation settings! 18650: 30 positive, 50 negative — tested myself, solid welds with no cold joints, double your battery-pack assembly efficiency! #SpotWelder #BatteryWelding #DIYLiIonBattery #ToolReview #GoodFinds

Who gets the joy of a one-second fuse? 32140 LiFePO4 power cell with 0.25 copper, welding test, P60F all-new supercapacitor spot welder #diy #WeldingEquipment #Satisfying #Tech #GoodFinds

This is how a perfect weld on a 32140 LiFePO4 cell is made! AWithZ UF20B spot welder — nails the hard welds with ease. #LiFePO4 #WeldingEquipment #diy #Tools

Don't throw away a dead power-drill battery! Fix it yourself with this 'portable wonder' and save more than half the cost! Small footprint, plenty of power. H1 handheld dual-pulse spot welder! #BatteryRepair #diy #Handmade #WeldingEquipment #PowerTools

P60F supercapacitor spot welder — the real-world test is legendary! 0.1mm nickel-plated steel strip + 0.2mm copper strip welded in a second, no spatter, super strong! #WeldingEquipment #GoodFinds #diy #Tools

0.4MM copper sheet fused in an instant — see the result ~ AWithZ P90C all-new supercapacitor spot welder (56.8KW) #AWithZSpotWelder #WeldingEquipment #GeekMods #GoodFinds #EquipmentReview

AWithZ H1 in action: 0.15mm nickel strip on cylindrical cells — handheld design, simple and easy to pick up. Click to learn more and raise your weld quality! #AWithZSpotWelder #Geek #Repair #Tools

Pushing the limit — AWithZ P60F hardcore copper welding! 0.4mm copper sheet + 0.1mm steel sheet? Way beyond the official 0.3mm copper — real-test results beyond imagination! Full parameters at the end, come copy the homework! #AWithZSpotWelder #Geek #Repair #Tools #Double11

H1 handheld dual-pulse spot welder — the battery-welding wonder tool, nails 0.2mm nickel strip perfectly. Precise control, professional results, super easy to pick up! #AWithZSpotWelder #BatteryWelding #ToolNerd #GoodFinds #Double11

[Copper welding] No sweat! UF20B spot welder, efficient and stable, no cold welds! #AWithZSpotWelder #WeldingEquipment #ElectronicsHobbyist #diy

Homemade e-bike power supply #AWithZSpotWelder #Geek #diy #CopperSheet #Welding

Copper sheet welding, power-cell welding — multiple modes handle it all with ease👍🏻 UF20B all-new supercapacitor spot welder #AWithZSpotWelder #WeldingEquipment #NationalDay #GoodFinds

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

Ever seen a 'sandwich' weld? A 0.37mm copper filling — the AWithZ P120D 'bites' right through! AWithZ P120D all-new supercapacitor energy-storage spot welder, 69.2kw, up to 2.0mm #WeldingWonderTool #IndustrialBlackTech #GeekMods #GoodFinds #EquipmentReview

A power bank making a power bank? The U3 Pro spot welder welds 0.35mm with no sweat! For a small spot welder, pick AWithZ #WeldingWonderTool #GeekMods #ElectronicsHobbyist #diy