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A small black adapter with a USB-C port and a 11.0x4.5mm DC plug

LORDWORLD

LORDWORLD USB-C 140W Charge Converter DC 11.0x4.5mm Thinkpad X1

SKU CH-TEFE-33443

Converts 18-20 V DC barrel input to USB-C PD delivering up to 140 W for 65 W, 100 W and 140 W laptops, tablets and phones

  • Delivers up to 140W power via USB-C PD trigger
  • Accepts DC 18V-20V input from 135W or 140W chargers
  • Supports multiple voltages including 5V, 9V, 15V and 20V outputs
  • Fits ThinkPad X1 with 11.0x4.5mm DC barrel connector
  • Compatible with QC 2.0 and QC 3.0 fast-charge protocols

Input and output profiles

This converter accepts DC input between 18V and 20V at up to 140W. It delivers USB-C output at up to 140W with fixed steps of 5V/2A, 9V/3A, 15V/2A, 20V/3.25A, 20V/5A and 20V/7A. A built-in PD emulator trigger negotiates the 20V/7A profile automatically when a compatible charger is connected.

Device compatibility and limits

It works with 135W or 140W barrel chargers to power 140W, 100W or 65W laptops, tablets and phones over USB-C. The barrel plug measures 11.0x4.5mm and is aimed at ThinkPad X1 models that use that size. Buyers must verify their device’s rated voltage and current before use, otherwise damage can occur. Users needing a different barrel diameter or a higher wattage than 140W should look elsewhere.

Build integration

The adapter sits between an existing 135W or 140W barrel charger and a USB-C cable, adding no extra bulk beyond the inline housing. It frees the user from carrying a separate USB-C power brick when a compatible barrel charger is already available. No driver or software setup is required; the PD emulator handles negotiation internally.

Highlights

  • Delivers up to 140W power via USB-C PD trigger
  • Accepts DC 18V-20V input from 135W or 140W chargers
  • Supports multiple voltages including 5V, 9V, 15V and 20V outputs
  • Fits ThinkPad X1 with 11.0x4.5mm DC barrel connector
  • Compatible with QC 2.0 and QC 3.0 fast-charge protocols

Specifications

BrandLORDWORLD

Questions about this item

What DC barrel plug size must my existing ThinkPad charger have for this converter to connect?

The converter accepts an 11.0 mm outer diameter and 4.5 mm inner diameter DC plug from a 135 W or 140 W charger.

Will this adapter negotiate 20 V at 5 A with my 100 W USB-C laptop?

Yes, the built-in PD trigger supports 20 V / 5 A output, matching a 100 W laptop profile.

How can I confirm the converter is delivering the correct voltage after plugging it in?

Check the laptop or phone charging indicator; it should show the negotiated PD voltage such as 20 V for a 140 W device.

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