HKY 140W USB‑C GaN Charger 28V/5A PD3.1

This high‑output USB‑C charger uses GaN (gallium nitride) technology and a PD3.1 controller to supply stable, efficient power for a broad range of devices — from 13–16" MacBook Pros and high‑performance Windows laptops to portable monitors, tablets, gaming consoles and select 140W power supplies such as Avalon Nano 3 miners and docking stations. It supports worldwide AC input (100–240V) and automatically negotiates the optimal voltage and current for connected devices.

How fast will this charger charge my laptop or phone?

The HKY 140W charger supports PD3.1 and can deliver up to 28V/5A, enabling significantly faster charging than lower‑wattage USB‑C adapters. Actual charge times depend on your device's PD profile and battery management, but this unit is designed for rapid top‑ups and quicker full charges when compared to 65–100W chargers.

• Up to 140W output (28V/5A) for compatible laptops and devices.
• Typical example: 16" MacBook Pro to ~50% in about 30 minutes under PD3.1 negotiation.
• Smartly steps down to 15V or 5V for tablets and phones to maximize speed and safety.

Will this charger work with my laptop, miner or docking station?

This adapter is built as a universal USB‑C PD source and is compatible with many major laptop brands and USB‑C accessories. Confirm your device supports USB‑C PD or PD3.1 and verify the required input voltage/current; it is not compatible with some legacy chargers requiring 20V at nonstandard amperages.

• Compatible with MacBook Pro/Air, Dell XPS/Alienware, Lenovo Legion, HP, Asus ROG, MSI, Acer, Samsung Galaxy Book and more.
• Works with Avalon Nano 3 BTC miner and some 140W PSUs and docking stations that accept USB‑C PD input.
• Not suitable for devices requiring special non‑PD proprietary voltages; check device specs first.

How safe and durable is the HKY 140W GaN charger?

HKY uses GaN semiconductors and solid‑state heat dissipation to keep the adapter efficient, compact and cooler under load. The charger includes multi‑layer protections and has multiple international certifications, helping protect your devices from overcurrent, overvoltage and overheating during normal use.

• GaN technology reduces size and improves thermal performance at high power levels.
• Certified to ETL, FCC, TUV, GS, CE, CB, PSE, UKCA, RCM, KC and KCC standards.
• Built‑in smart detection automatically supplies the correct voltage and current for connected devices.

What comes in the box and what warranty coverage is offered?

The package includes the 140W USB‑C adapter, an AC power cord and a USB‑C charging cable plus a user guide. HKY backs this product with support and a warranty to help ensure long‑term use and peace of mind.

• Included: 1 × 140W USB‑C power adapter, 1 × AC power cord, 1 × USB‑C cable, user guide.
• 90‑day money‑back guarantee and a longer manufacturer warranty for coverage details.
• Customer support available for compatibility questions and troubleshooting.

Who is this for? This charger is aimed at professionals, gamers and power users who need a compact, high‑wattage USB‑C solution for laptops, gaming systems, docking stations, portable monitors and certain high‑power devices like Avalon Nano 3 miners. Choose this adapter if you want faster PD3.1 charging, wide device compatibility and a smaller footprint without sacrificing power delivery or safety.