Compare models
1. Core welding performance
—Peak output current
650APeak output current
1650APeak output current
Single Grade-A cell, 5000 / 7500 / 11000mAhEnergy-storage design
Single Grade-A cell, 5000 / 7500 / 11000mAhEnergy-storage design
Dual Grade-A cells in series, 10000mAh (Li-polymer)Energy-storage design
Dual-pulse (built-in cell)Technology
Dual-pulse (built-in cell)Technology
Dual-pulse (built-in cell)Technology
—Welding levels
80 档(1.0–9.0)Welding levels
99 levelsWelding levels
2. Max weldable thickness by material (mm)
0.35 mmNickel-plated steel strip
0.35 mmNickel-plated steel strip
0.3 mmNickel-plated steel strip
0.2 mmPure nickel strip
0.2 mmPure nickel strip
0.3 mmPure nickel strip
0.1 mmCopper strip
0.1 mmCopper strip
0.15 mmCopper strip
0.35 mmStainless strip
0.35 mmStainless strip
0.3 mmStainless strip
0.35 mmIron sheet
0.35 mmIron sheet
0.3 mmIron sheet
3. Supported cells
18650 / 21700Cylindrical Li-ion
18650 / 21700Cylindrical Li-ion
18650 / 21700Cylindrical Li-ion
—Cylindrical LiFePO4
—Cylindrical LiFePO4
—Cylindrical LiFePO4
—Prismatic / pouch
Pouch / phone cellsPrismatic / pouch
Pouch / phone cellsPrismatic / pouch
4. Recommended use cases
Portable / indoorEnvironment
Portable / indoorEnvironment
Portable / indoorEnvironment
Everyday repairUsage intensity
Everyday repairUsage intensity
Everyday repairUsage intensity
Cylindrical cell pack assembly · DIY power bank / portable power · Home-appliance repairTypical uses
Cylindrical cell pack assembly · DIY power bank / portable power · Coin-cell welding · Phone & laptop cell replacementTypical uses
Cylindrical cell pack assembly · Coin-cell welding · Phone & laptop cell replacement · Hardware & metal joiningTypical uses
5. Who it's for
Battery DIY enthusiasts, field repair techs, beginners and hobbyistsWho it's for
Battery DIY enthusiasts, field repair techs, beginners and hobbyistsWho it's for
Battery DIY enthusiasts, field repair techs, beginners and hobbyistsWho it's for
6. Endurance & protection
—Max welds per charge
—Max welds per charge
~4000 weldsMax welds per charge
—Thermal protection threshold
—Thermal protection threshold
—Thermal protection threshold
—Protection list
—Protection list
—Protection list
7. Pen & pin setup
Separate welding penPen form
Separate welding penPen form
Separate welding penPen form
—Pin material & spec
—Pin material & spec
—Pin material & spec
8. Hardware specs
Separate host + penBody structure
Separate host + penBody structure
Separate host + penBody structure
—Housing material
—Housing material
Plastic, blackHousing material
—Weight
—Weight
~300gWeight
—Dimensions
约 159×92×25mmDimensions
~100.5×158×48mmDimensions
2.0-inch full colorScreen
2.0-inch 320×240 full colorScreen
HD TFT + knobScreen
—External foot switch
—External foot switch
SupportExternal foot switch
9. Charging & electrical
—Input
Type-C 5V/2.1A(MAX)Input
Type-C 5V/2.4A(MAX)Input
—Output voltage
4.2VOutput voltage
8.4VOutput voltage
—Output current
650AOutput current
1650AOutput current
—Output power
—Output power
9000WOutput power
—Fast charge
—Fast charge
—Fast charge
"—" means not officially published; thicknesses are lab maximums from the official product pages. The nine spec groups match "Specifications" on each product page.