Account
Avatar / IDYour nickname and user ID after signing inAccount settingsNickname, avatar, email and passwordCreator centerWorks, points, messages and earningsCreator programSample requests and promotion benefits
Store
AmazonAmazon · GlobalTmallTmall / Taobao flagshipAliExpressAliExpressJD.comJD.comOZONRussiaDouyinDouyin Shop
Enter to search · Esc to close
StoreAccountSearch
Enter Products ›
Handheld H Series
HF7Supercapacitor in a pen: 1060A peak, 1.5M cycles, 10-second recharge, welds 0.3mm nickel/copper — the most capable handheld in its class.H2-2026150g pen-style welder: 1060A dual-pulse, 60k-weld dedicated cell, 2000 welds per charge, 1.3" color screen with 90 levels, dual-tip needle, welds 0.35mm nickel-plated steel and copper.H1-2026125g entry model: 880A dual pulse, single A-grade cell, 1500 welds per charge, welds 0.25mm nickel-plated steel. Learn it in 3 seconds.View all H Series ›
Universal U Series
UF20BU-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.UK3Twin A-grade cells (10000mAh), 1650A / 9000W, ~4000 welds per charge; knob + TFT screen, 99 levels, auto/pen/foot-switch; welds 0.3mm pure nickel and butt-welds 0.7mm stainless. ~300g, 2-year warranty.UK1Twin A-grade cells (5000mAh), 1380A / 9000W, 1500 welds; knob + digital display, dual pulse; welds up to 0.5mm (butt), nickel/copper/steel. ~370g, 1-year warranty.View all U Series ›
Professional P Series
P120DTop of the P series: 4×3000F supercapacitors, 69.2kW / 6590A, welds 2.0mm nickel-plated steel, 0.5mm copper, 0.6mm aluminium; butt-welds 6.0mm steel, prismatic Al-to-Ni/Cu; 2.4" screen with 999 levels, 15A fast charge, 4kg with hidden handle.P60F6×1000F 9V supercapacitors, 29.2kW / 3250A / 8687J, welds 1.0mm nickel-plated steel, 0.5mm pure nickel, 0.3mm copper; 2.4" screen with 999 levels, 15A fast charge (1 min), 1.5kg.View all P Series ›
Energy-storage tech
Purpose-built lithium weldersUK3Twin A-grade cells (10000mAh), 1650A / 9000W, ~4000 welds per charge; knob + TFT screen, 99 levels, auto/pen/foot-switch; welds 0.3mm pure nickel and butt-welds 0.7mm stainless. ~300g, 2-year warranty.UK1Twin A-grade cells (5000mAh), 1380A / 9000W, 1500 welds; knob + digital display, dual pulse; welds up to 0.5mm (butt), nickel/copper/steel. ~370g, 1-year warranty.H2-2026150g pen-style welder: 1060A dual-pulse, 60k-weld dedicated cell, 2000 welds per charge, 1.3" color screen with 90 levels, dual-tip needle, welds 0.35mm nickel-plated steel and copper.All-new supercapacitor weldersUF20BU-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.P120DTop of the P series: 4×3000F supercapacitors, 69.2kW / 6590A, welds 2.0mm nickel-plated steel, 0.5mm copper, 0.6mm aluminium; butt-welds 6.0mm steel, prismatic Al-to-Ni/Cu; 2.4" screen with 999 levels, 15A fast charge, 4kg with hidden handle.P60F6×1000F 9V supercapacitors, 29.2kW / 3250A / 8687J, welds 1.0mm nickel-plated steel, 0.5mm pure nickel, 0.3mm copper; 2.4" screen with 999 levels, 15A fast charge (1 min), 1.5kg.
Professional welding solutions
Cylindrical cellsPrismatic cellsEnergy storageMetalworking
Selection tools
Shop now ›Help me choose ›Compare models ›Parameter lookup ›
Enter Accessories ›
welding pen
WP110 welding pen · 8 AWG · 1 pc40 cm / 8.3 mm² · high-conductivity copper coreWP120 welding pen · 8 AWG · 1 pc40 cm / 8.3 mm² · high-conductivity copper core · smart triggerWP110-6 welding pen · 6 AWG · 1 pc50 cm / 16 mm² · high-conductivity copper coreWP120-6 welding pen · 6 AWG · 1 pc50 cm / 16 mm² · high-conductivity copper core · smart triggerWP240 multi-function integrated pen65 cm / 35 mm² · smart spot welding · fits many scenariosWP158 welding pen · 1 pc60 cm / 25 mm² · high-conductivity copper coreBuy now ›
welding pins
H series pins · 1 pairDouble-ended pins · premium alumina copper · wear-resistant · durableWP110/120 pins · 8 AWG · 1 pairPremium alumina copper · wear-resistant · durable · for 8 AWGWP110-6/120-6 pins · 6 AWG · 1 pairPremium alumina copper · wear-resistant · durable · for 6 AWGWP158 pins · 1 pairHigh conductivity · heat-resistant · premium alumina copper · wear-resistant · durableBuy now ›
Other
Other accessoriesFind accessories ›
Enter Consumables ›
Shop consumables
Cell18650 cells / 21700 cells / 26650 cellsConnecting materialsNickel strip / sheet / Copper strip / sheet / Copper-nickel composite stripProtection & insulationBMS / Barley paper / Insulation paperStructural parts & enclosuresBuy now ›
More categories
Auxiliary materialsFlux / Solder wire / Solder pasteWires & connectorsSilicone wire / Power cables / Balance leadsKits / bundles18650 pack kit / 21700 pack kit / Power-tool battery repair kitKits / bundlesSubmit a request ›
Consumables guide
Selection guideWelding guideSafety & insulationPack assemblyFAQLearn more ›
Enter WeldWorld ›
WeldWorld
Learn more ›
Enter Explore ›
Company / Brand
About AWithZContact usJoin usTrust Center
Explore More
Blog
Enter Academy ›
Academy
Start welding →
course
Welder tutorialsDIY & ideasMaker buildsFAQ
Enter Dealers ›
Dealers
Apply to be a dealerWhy AWithZDealer supportApplicationsCase studiesDealer contact
Enter Creator program ›
Partnership program
Partnership programRequest a samplePromotion benefitsFAQ
Enter Feedback Center ›
Feedback Center
Product feedback & suggestionsUser survey
Enter Support ›
Support
Support by modelFind my welderSoftwareQuick servicesLatest updatesContact us
UF20BDocumentsHow-to guidesFAQSoftware & firmwareReport an issue
‹ Back to support by model
UF20B

UF20B Support center

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.

Keep the power supply stable during the upgrade; do not unplug or cut power. If an upgrade fails, recover it via Troubleshooting.
Latest firmware
v2.1.0Published 2026-09-18 · 15MB

Fixed issue XXXX (release notes to be provided by the brand)

Download firmware
Previous firmware
v2.0.52026-08-01

Download · Release notes

v1.9.02026-06-15

Download · Release notes

Companion software & tools
UF20B PC configuration tool v1.0Windows

Download

Upgrade guides & FAQ
Illustrated guide · How to upgrade the firmware

View

Video guide · How to roll back after a failed firmware upgrade

View

FAQ · The downloaded firmware won't unzip. What should I do?

View

Version numbers, dates and sizes are placeholders from the third-draft wireframe; the real firmware library is to be provided by the brand.

Didn't find your answer?Submit a ticket — our tech support will get back to you soon
Contact
Dealer / enterprise: partner@awithz.com (placeholder)
User support: Live chat · weekdays 9:00–18:00
Creators / media / business: media@awithz.com (placeholder)
See all contact channels ›