USB Power Delivery (USB-PD) is a fast-charging standard over USB-C that lets devices negotiate higher voltages and currents — up to 240W — to charge phones, tablets, and laptops quickly and safely with a single cable type.
USB Power Delivery (USB-PD) is a charging specification that runs over USB-C connectors, allowing devices and chargers to negotiate the optimal power level for fast, safe charging. Where old USB delivered a fixed 5V/2.5W, USB-PD can deliver up to 240W (with the latest PD 3.1 spec), enough to fast-charge phones, tablets, and even high-performance laptops from a single standardized cable and charger.
**How USB-PD works technically:** When a USB-PD device connects to a PD charger, they communicate to negotiate a "power contract" — selecting the highest voltage/current both support (e.g., 9V/3A = 27W for a phone, 20V/5A = 100W for a laptop). PD 3.0 introduced PPS (Programmable Power Supply), which lets the voltage adjust in fine steps for more efficient, cooler charging — the basis of many phones' fast-charging modes. PD 3.1 extended the maximum to 240W (48V), enabling gaming laptops to charge over USB-C. The negotiation prevents sending too much power to a device that can't handle it.
**Why it matters to buyers:** USB-PD is what lets one charger and cable handle your phone, tablet, and laptop — reducing the pile of proprietary chargers. It enables fast charging (a phone to ~50% in 30 minutes; a laptop fully in 1-2 hours). The key buyer consideration is matching wattage: a 30W charger fast-charges a phone but slowly charges a laptop; a 100W charger handles both. GaN (gallium nitride) chargers pack high PD wattage into compact bricks.
**What to look for:** - Match charger wattage to device: ~30W phone, ~65W ultrabook, 100-140W gaming laptop - PPS support matters for fastest phone charging (Samsung Super Fast Charging needs it) - GaN chargers are smaller/cooler at high wattage - One quality 100W+ GaN PD charger can replace several device-specific bricks - Cable matters: high-wattage (100W+) charging needs an appropriately-rated USB-C cable
Real-world 2026: USB-C with PD is now near-universal (the EU mandates USB-C charging), and a single 100W GaN charger handles a phone, tablet, and most laptops. Note that some brands layer proprietary fast-charging (OnePlus SuperVOOC, etc.) on top, which only reaches peak speed with the brand's own charger.