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Compact USB-C to 7.4×5.0 mm barrel adapter with built-in LED wattage display

Fervit

Fervit USB-C to DC 7.4×5.0 mm Adapter 100W PD Wattage Display

SKU CH-PBJC-89CBC

Connects a USB-C PD charger to a 7.4×5.0 mm DC laptop port with a real-time wattage display

  • Real-time power monitoring via LED voltage, current and wattage display
  • Up to 100 W Power Delivery at 20 V 5 A with PD trigger
  • Works with QC 2.0, QC 3.0 and USB PD chargers
  • Compact alloy-shell design for durable plug-and-play use
  • Fits DC 7.4×5.0 mm barrel jacks on compatible laptops

Purpose and audience

This Fervit adapter converts a USB-C Power Delivery source into a DC 7.4×5.0 mm barrel output for laptops that charge through that connector. It suits users who want to power or charge a compatible laptop from a high-wattage USB-C charger while monitoring live voltage, current and wattage on the built-in LED display.

Power limits and requirements

The adapter delivers up to 100 W at 20 V and 5 A, and also supports 65 W operation within an 18.5 V to 20.5 V range. To reach the 100 W maximum the connected USB-C charger and cable must each be rated for 100 W or higher; lower-rated sources will restrict output accordingly. The unit negotiates PD, QC 2.0, QC 3.0 and USB PD profiles through its Type-C male input.

Compatibility checks

Verify that your laptop uses a DC 7.4×5.0 mm barrel jack and accepts 20 V input before ordering. Confirm that your USB-C charger and cable are both rated for at least 100 W if you need the full 100 W output, otherwise the adapter will fall back to a lower negotiated power level. The plug-and-play design requires no drivers or configuration.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $17.99
Pricier than about 70% of the 15,227 comparable items (median $14.99).

Specifications

Product
Brand nameFervit

Questions about this item

Which barrel-jack size does this adapter fit?

The output is a DC male plug measuring 7.4 by 5.0 mm, so it fits laptops that use that exact barrel size.

What does the 100 W rating actually deliver to my laptop?

It can supply up to 20 V at 5 A, providing a maximum of 100 W when the charger and cable are also rated for 100 W or higher.

Which fast-charge standards does the USB-C input negotiate?

The USB-C male end triggers PD and supports QC 2.0 and QC 3.0, requesting 20 V 5 A for the 100 W output.

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