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The Sigelei Fuchai Duo-3 2 Cover Version Box Mod is a new Fuchai device that has a maximum output range of 255W and a full colour display that displays colour specific zones for easier read out and visibility. Its 0.1 to 3.0 ohm atomizer resistance range allows for various styles of vaping, including temperature control. The 2 Cover Version includes a two (2) battery cover and a three (3) battery cover, which allows the user to switch between a full size and full powered 255W setup to a compact reduced power 175W setup.

The Fuchai Duo-3 features both TCR and AFR functionality, greatly extending precision and customization. Power preheat, in which a user can set wattage and time dials output to ramp or decrease appropriately, and a temperature compensation mode that can compensate for fluctuations in temperature, combine to create a very sophisticated output capability.

The full-colour display screen is vertically oriented and displays a large amount of essential data, from detailed battery state and battery life meters to output voltage, resistance, wattage, and even a puff counter. With its versatile design, the Sigelei Fuchai Duo-3 2 Cover Version 255W TC Box Mod can be a powerful or semi-compact device that can accompany 
atomizers up to 32mm in diameter! 


  • 255W Maximum Output Wattage
    • Two Battery Mode
      • 10 to 175W
      • 1.0 to 7.5V
    • Three Battery Mode
      • 10 to 255W
      • 1.0 to 9.0V
    • 40A Max
    • 0.1 to 3.0 ohm Atomizer Resistance
  • Preheat Power
    • Set Output Wattage and Time
    • Hugely Increases Vaping Capability and Precision
  • Temperature Control
    • Ni200 Nickel Support
    • Titanium Support
    • Stainless Steel Support
      • 316
      • 317
    • TCR Functionality
      • Temperature Coefficient of Resistivity
    • TFR Functionality
      • Temperature Factor of Resistivity
    • Resistance Read and Lock
    • 5 Coil Memory Bank
    • 200 to 570 Degrees Fahrenheit
  • Bottom Button and Rear Battery Access Door
    • Accepts Two or Three 18650 Batteries (sold separately)
    • Includes Two Battery Door and Three Battery Door
  • Ergonomically Placed Controls
    • One Handed Operation
    • Large Firing Button
    • Two Adjustment Control Buttons
  • 1 Inch Vertically Oriented Full Color Display
    • Vibrant Display
    • Atomizer Resistance
    • Output Voltage
    • Output Current
    • Battery State and Battery Life Indicator
    • Output Wattage
    • Output Temperature
    • Puff Counter
  • Micro USB Charge and Update Port
    • 2.5A Maximum Charge Rate
  • Trim and Striking Design
    • Sharp Angular Control Face
    • Curved Chassis
  • Zinc Alloy Aluminum Alloy Chassis
  • Stainless Steel 510 Connection
    • Spring Loaded Gold Plated Connection
  • Low Resistance/Battery Imbalance/Low Input Voltage/Short Circuit/Overheating Protection

Package Contents

  • 1x Sigelei Fuchai Duo-3 2 Cover Version 255W TC Box Mod
  • 1x Three Battery Cover
  • 1x Micro USB Charging and Update Cable
  • 1x User Manual
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