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Black adapter with 5.5x2.1mm female DC input and USB-C male output

UTONDA Co., Ltd.

UTONDA Co., Ltd. DC 5.5x2.1mm Female to USB-C PD Adapter 65W laptop battery

SKU CH-GZV8-M2FJS

Converts a 5.5 × 2.1 mm DC barrel source into a USB-C PD supply delivering up to 65 W with 5 V, 9 V and 20 V profiles, using an E-Mark chip for safe negotiation

  • Converts 5.5x2.1mm DC input to USB-C PD output
  • Delivers up to 65W via 20V 3.25A PD profile
  • E-Mark chip negotiates power safely for connected devices
  • PVC shell resists wear and dissipates heat during use
  • Works with laptops, phones, tablets and other USB-C gear

DC-to-Type-C PD converter

This adapter turns a 5.5×2.1 mm DC barrel jack into a USB-C Power Delivery source. It delivers up to 65 W at 20 V 3.25 A with 5 V and 9 V fallback steps. The unit suits owners of legacy barrel-output chargers who need to power modern USB-C laptops, tablets or power banks. No battery is included; the device is a pure protocol converter.

E-Mark chip and PVC housing

An integrated E-Mark chip negotiates the correct voltage and current so connected hardware never receives an unsupported level. The black PVC shell resists fingerprints, dissipates heat quickly and survives repeated insertion cycles. These materials keep the converter lightweight and durable for daily carry in a laptop bag.

Female barrel input, male USB-C output

The 5.5×2.1 mm female socket accepts standard centre-positive barrel plugs from existing AC adapters or portable power stations. A fixed male USB-C plug connects directly to the target device without an extra cable. Builders who need a second USB-C port or a locking barrel connector will find this single-port design unsuitable.

How it compares

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

Price $9.99
Cheaper than about 92% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

Will the E-Mark chip need replacing after extended use?

The E-Mark chip is built into the adapter and has no user-serviceable replacement interval; it remains functional for the life of the converter.

What limits continuous 65 W output before the adapter throttles?

The adapter delivers up to 20 V at 3.25 A for a maximum of 65 W; sustained loads at that level are constrained by the PVC shell’s passive heat dissipation.

How hot or noisy does the converter get when powering a laptop all day?

The PVC housing provides fast heat dissipation with no moving parts, so the unit runs silently and stays warm but within safe limits during all-day use.

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