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Black DC 7.4 x 5.0mm female to USB-C male adapter

BUCIER

BUCIER 100W PD DC 7.4mm x 5.0mm Female to USB-C Male Adapter (7450 B)

SKU CH-5SKQ-3BY6M

Converts a 7.4mm x 5.0mm DC barrel jack to a USB-C male plug with a built-in PD chip supporting 5V, 9V and 20V output up to 100W

  • Power adapter voltage20 V
  • Product colorBlsck
  • Product typeUSB Type C
  • Compatible withLaptop
  • Charges laptops via USB-C using a 7.4mm x 5.0mm DC source
  • Delivers up to 100W with built-in PD identification chip
  • Supports 5V, 9V and 20V output profiles for broad device compatibility
  • Input accepts 15V to 20.5V from barrel connector 7450
  • Compact adapter replaces bulky power bricks for travel

Converts DC barrel power to USB-C PD

This adapter accepts a 7.4mm x 5.0mm DC barrel plug and provides a USB-C male connector with Power Delivery support. It contains a built-in PD identification chip that negotiates 5V, 9V or 20V output up to 100W. The unit is designed to power USB-C laptops, tablets and phones from an existing barrel-type power source.

For users with barrel chargers needing USB-C

Suits owners of laptops or devices that charge via USB-C PD who want to use a compatible 7.4mm x 5.0mm DC power supply. Not for users whose DC charger cannot exceed the laptop's power draw, or whose charger delivers 12V or 15V only. Also unsuitable for devices requiring more than 100W or for barrel connectors with a different inner pin diameter.

Requires DC input voltage above 15V

The adapter operates on a 15V to 20.5V DC input range and will not function with lower-voltage barrel supplies. The source charger must provide strictly more power than the connected device consumes; a 90W charger cannot run a 90W laptop through this adapter. Output is limited to 20V at 5A maximum.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 80% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameSinLoon
Model name7.4 × 5.0 mm
Product colorBlsck
Product typeUSB Type C
Power
Power adapter voltage20 V
Compatibility
Compatible withLaptop

Questions about this item

What does the 100W PD rating mean when I plug this adapter into my laptop?

It means the adapter can pass up to 100W of USB-C Power Delivery from a compatible charger to your laptop, provided the DC input charger supplies more power than the laptop draws.

Which PD voltage steps does the built-in chip actually negotiate over the USB-C male connector?

The chip negotiates 5V, 9V at 1.5A and 20V at 5A; 12V and 15V are not supported on the output side.

Will the DC 7.4mm x 5.0mm female jack fit my existing barrel charger tip?

The jack accepts a 7.4mm outer diameter and 0.6mm centre pin, matching the common 7450 barrel size used on many laptop chargers.

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