U3加强版 Specs
Welder and power bank in one · Nine standardized spec groups; "—" means not officially published.
Weldable thickness (mm, lab max)
Nickel-plated steel strip0.35
Pure nickel strip0.2
Copper strip0.1
Stainless strip0.35
Iron sheet0.35
1. Core welding performance
Peak output current650A
Energy-storage designSingle Grade-A cell, 5000 / 7500 / 11000mAh
TechnologyDual-pulse (built-in cell)
Welding levels80 档(1.0–9.0)
2. Max weldable thickness by material (mm)
Nickel-plated steel strip0.35 mm
Pure nickel strip0.2 mm
Copper strip0.1 mm
Stainless strip0.35 mm
Iron sheet0.35 mm
3. Supported cells
Cylindrical Li-ion18650 / 21700
Cylindrical LiFePO4—
Prismatic / pouchPouch / phone cells
4. Recommended use cases
EnvironmentPortable / indoor
Usage intensityEveryday repair
Typical usesCylindrical cell pack assembly · DIY power bank / portable power · Coin-cell welding · Phone & laptop cell replacement
5. Who it's for
Who it's forBattery DIY enthusiasts, field repair techs, beginners and hobbyists
6. Endurance & protection
Max welds per charge—
Thermal protection threshold—
Protection list—
7. Pen & pin setup
Pen formSeparate welding pen
Pin material & spec—
8. Hardware specs
Body structureSeparate host + pen
Housing material—
Weight—
Dimensions约 159×92×25mm
Screen2.0-inch 320×240 full color
External foot switch—
9. Charging & electrical
InputType-C 5V/2.1A(MAX)
Output voltage4.2V
Output current650A
Output power—
Fast charge—
Data from the official product pages and manuals; results vary with material batch and environment.
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