USB Reference
USB Charging
USB charging includes several ways USB ports, chargers, devices, and cables provide or negotiate power. USB-C, USB Power Delivery, PPS, and Battery Charging describe different parts of that system.
Related: USB Connectors · USB Standards · USB Adapters
Comparison
| Technology | What it describes | How power is handled | Key compatibility check |
|---|---|---|---|
| USB-C charging | Power over the USB-C connector system | USB-C current advertisement and optional USB PD | Port, device, cable, and PD support |
| USB Power Delivery | Negotiated USB power | Source and sink negotiate supported power levels | PD support and required cable capability |
| USB PD PPS | Programmable USB PD power | Compatible devices request adjustable output within advertised ranges | PPS support on both charger and device |
| USB Battery Charging | Legacy USB charging-port behavior | BC 1.2 port detection and charging rules | BC 1.2 support and port type |
| USB fast charging | General higher-speed charging concept | Depends on the supported charging protocol and power profile | Charger, device, cable, and protocol match |
Articles
10 Best USB Charging Stations for Phones, Tablets, and More
Best 45W USB Chargers for Fast Charging
Best Multiport USB Wall Chargers for Fast Charging
Can You Charge a Laptop With USB? Ports, Power, and USB-C
Can a USB Car Charger Drain Your Car Battery? What to Know
