14 best welder under $20.00
We picked 14 welder from AliExpress with real orders and good reviews. Prices go from $1.15 to $16.49, the average rating is 4.8 stars and the most popular one has 10k orders. Every product opens on AliExpress, where you pay with buyer protection.
Updated: 2026-11
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-63%1Roll 10M 18650 Battery Nickel Plated Strip Li-ion Connector 0.1mm 0.12mm 0.15mm 0.2mm Spot Welder Steel$2.61 $6.96★ 4.9 · 10k soldView on AliExpress → - 2
-64%Z99 Portable Spot Welder Kit, 12V, 99-Level Power Adjustable, 18650 Lithium-Ion Battery Spot Welder, Voltage$3.66 $10.25★ 4.9 · 6.4k soldView on AliExpress → - 3
-60%1Roll Nickel Plated Steel Strip Belt Spot Welding Machine Battery Welder for 18650 Li-ion Battery Nickel$2.61 $6.59★ 4.9 · 5.4k soldView on AliExpress → - 4
-68%Plastic Welding Staples 1000/500/200/100Pcs 4 Types 0.8mm Welding Nails Plastic Welder Repair Nails Kit$1.15 $3.58★ 4.8 · 4.2k soldView on AliExpress → - 5
-61%1/10m/Roll 18650 21700 Battery Nickel Plated Strip Li-ion Connector 0.1mm 0.15mm 0.2mm Spot Welder Steel$1.56 $3.95★ 4.9 · 4k soldView on AliExpress → - 6
-67%5M/Roll 99.9% T2 Copper Strip Strap For Energy Storage Spot Welder 18650 21700 Lithium Battery Connection$1.15 $3.46★ 4.9 · 3.5k soldView on AliExpress → - 7
-69%99 Gears 12V Spot Welder Kit Digital Power Adjustable Spot Welding Pen Control Board Nickel Sheet For 18650$14.80 $47.18★ 4.5 · 3.5k soldView on AliExpress → - 8
-65%Spot Welding Pen Integrated Spot Welder Hand-held with Automatic Trigger For 18650 Battery Trigger Weld Mini$15.08 $42.80★ 4.6 · 2.5k soldView on AliExpress → - 9
-65%AC9-12V DIY NY-D01 Control Board 40A/100A Spot Welding Machine Control Board Welder Panel Adjust Time$14.23 $40.14★ 4.9 · 2k soldView on AliExpress → - 10
-30%10m/Roll 18650 Battery Nickel Plated Strip Li-ion Connector 0.1mm 0.12mm 0.15mm 0.2mm Spot Welder Steel Belt$2.36 $3.39★ 4.8 · 1.9k soldView on AliExpress → - 11
-62%4000mAh USB Rechargeable Plastic Welder PW35 for Car Bumper Kayak and Plastic Product Repairs with 4 Stapler$16.31 $42.69★ 4.9 · 1.9k soldView on AliExpress → - 12
-81%100/300pcs Plastic Welder Stainless Steel Hot Rivet Machine Special for Rivets Bumper Welding Equipment Tools$1.15 $6.16★ 4.9 · 1.9k soldView on AliExpress → - 13
-64%Plastic Welding Kit Repair Welder Kit Hot Stapler for Car Bumper Cracks, Kayaks, Plastic Toys$14.95 $41.64★ 4.6 · 1.5k soldView on AliExpress → - 14
-14%KEKK K99 Mini Spot Welder 99 Gears Mini Spots Welding Machine Control Board for 18650 Battery 0.1-0.3mm$16.49 $19.19★ 4.7 · 1.4k soldView on AliExpress →
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