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Compact USB-C to DC barrel adapter with LED wattage display

Fervit

Fervit USB-C to DC 4.5x3.0mm HP Barrel Adapter 100W with Display

SKU CH-2GF2-8FK4V

Converts USB-C PD up to 100W to a 4.5×3.0mm HP barrel jack with a real-time voltage, current and wattage display

  • Real-time voltage, current and power readout on built-in LED display
  • Up to 100W PD fast charging via USB-C with 20V 5A trigger
  • Works with 65W and 18.5–20.5V DC laptops using 4.5mm barrel jack
  • Plug-and-play alloy housing protects connector for durable daily use
  • Compatible with most USB-C chargers and DC-input laptops — check jack size

USB-C to HP Barrel Adapter 100W

The Fervit adapter converts a USB-C Power Delivery source into a 4.5x3.0mm DC barrel plug for compatible HP laptops. An integrated LED display shows real-time voltage, current and wattage during charging. It supports up to 100W at 20V/5A when paired with a 100W charger and cable. The alloy housing protects the connector in daily use.

Replaces proprietary barrel charger

This unit lets you power a barrel-input HP laptop from a universal USB-C PD charger instead of the original brick. It also supports QC2.0, QC3.0 and USB PD profiles down to 65W and voltages between 18.5V and 20.5V. The jump is worth it when you want one compact charger for travel or a replacement for a lost or damaged OEM supply. Buyers whose laptops need a different barrel size or higher voltage cannot use this adapter.

Plug-and-play with alloy shell

Simply connect a USB-C PD charger to the female port and insert the DC male tip into the laptop. No drivers or configuration are required. The most common issue is using a charger or cable rated below 100W, which prevents the adapter from delivering full power. Always verify the laptop's DC jack matches the 4.5x3.0mm dimensions before purchasing.

Highlights

  • Real-time voltage, current and power readout on built-in LED display
  • Up to 100W PD fast charging via USB-C with 20V 5A trigger
  • Works with 65W and 18.5–20.5V DC laptops using 4.5mm barrel jack
  • Plug-and-play alloy housing protects connector for durable daily use
  • Compatible with most USB-C chargers and DC-input laptops — check jack size

Specifications

BrandFervit

Questions about this item

What barrel-jack diameter does the adapter's DC plug use?

The adapter ends in a 4.5 mm outer-diameter DC male plug with a 3.0 mm centre pin, matching the HP barrel standard.

What charger and cable ratings are required to reach the full 100 W output?

Both the USB-C charger and the cable must be rated for at least 100 W; otherwise the adapter will negotiate a lower power level.

How long will the built-in LED display remain readable before it needs attention?

The display is a passive LED panel with no user-serviceable parts; it requires no scheduled maintenance or replacement.

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