Avatar / IDYour nickname and user ID after signing inAccount settingsNickname, avatar, email and passwordNotificationsReplies, interactions, system notices and announcementsCreator centerWorks, points, messages and earningsCreator programSample requests and promotion benefits
Store
AmazonAmazon · US
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 pcA standard welding pen without a control button, with replaceable pins.WP120 welding pen · 8 AWG · 1 pcA manual button triggers at will; removable alumina-copper pins; thick copper lead; about 40cm long.WP110-6 welding pen · 6 AWG · 1 pcThick-lead version of the standard welding pen.WP120-6 welding pen · 6 AWG · 1 pcThicker copper lead for high-current models; UK3/UKF10 pages note the optional WP120-6 smart hand pen for triggered welding.WP240 multi-function integrated penAn all-in-one smart welding pen with hand-triggered control, fitting high-power hosts such as P90C/P120D (SKU photo shows "P90C-SKU-with-WP240-pen"); replaceable pins.WP158 welding pen · 1 pcShown in accessory photos; the catalog lists only its dedicated pins (¥19.9) — the pen's price and fit are to be confirmed.Buy 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
Technical manuals
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 Find my welder ›
Find my welder
Help me chooseCompare modelsParameters
Enter Support ›
Support
Support by modelSoftwareQuick servicesLatest updatesFeedback CenterContact us
UF20BDocumentsHow-to guidesFAQReport 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.

UF20B Needle repla
UF20B Needle repla
New release! Unbox
New release! Unbox
AWithZ Spot Welder
AWithZ Spot Welder
Only new high qual
Only new high qual
Copper Sheet Weldi
Copper Sheet Weldi
A break through th
A break through th
UF20B Spot Welder
UF20B Spot Welder
I want both power
I want both power
UF20B Spot Welder,
UF20B Spot Welder,
[Tutorial] Easily
[Tutorial] Easily
New! Super high ap
New! Super high ap
UF20B is addictive
UF20B is addictive

Enter UF20B course ›

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