Fervit USB-C to DC 3.5×1.3 mm 100 W adapter with wattage display
Converts a USB-C PD charger into a 3.5×1.3 mm DC plug delivering up to 100 W at 20 V 5 A with a live voltage, current and wattage display
- Real-time power monitoring with LED voltage, current and wattage display
- Up to 100 W Power Delivery via USB-C PD and QC 2.0/3.0 trigger
- Plug-and-play adapter converts USB-C input to 3.5×1.3 mm DC output
- Alloy housing protects the connector for durable daily use
- Works with most USB-C chargers and DC laptops — verify jack size first
Fervit USB-C to DC 3.5×1.3 mm 100 W adapter
This adapter converts a USB-C Power Delivery source into a 3.5 mm by 1.3 mm barrel jack for laptops and other DC devices. It includes an LED display that shows voltage, current and power in real time. The alloy shell protects the connector during transport and daily use. It is aimed at users who want to power a barrel-jack laptop from a modern USB-C charger.
Upgrading from a fixed barrel-jack charger
The adapter replaces a proprietary laptop brick with any USB-C charger that can deliver 20 V at 5 A for the full 100 W, or 65 W at 18.5 V to 20.5 V for lower-power models. The jump is worth it when you want one charger for multiple devices and need visible confirmation of the negotiated power level. If your charger or cable is rated below 100 W, the adapter will only deliver the lower negotiated power.
Plug-and-play installation with one critical check
Installation is fully plug and play: connect the USB-C male end to the charger and the DC male barrel to the laptop. The only common issue is using a charger or cable that cannot support 100 W, which limits output to the lower negotiated voltage and current. Always verify that your laptop uses a 3.5 mm by 1.3 mm jack before purchase.
How it compares
Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.
- Price $18.99
- Cheaper than about 60% of the 3,875 comparable items (median $23.99).
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Specifications
| Product | |
|---|---|
| Brand name | Fervit |
Questions about this item
What barrel jack size does the DC output plug use?
The adapter outputs through a DC male barrel jack measuring 3.5 mm outer diameter by 1.3 mm inner diameter.
How do I get the full 100 W output from the Type-C input?
Connect a USB-C charger and cable both rated for 100 W or higher; the built-in PD trigger then negotiates 20 V at 5 A.
Does the LED display need separate power or calibration over time?
No, the display is powered directly from the charging circuit and shows voltage, current and wattage in real time without calibration.
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