A 100-watt charger is not automatically five times better than a 20-watt charger. Your device only takes the power it can negotiate, the cable may set a lower ceiling, and a multi-port charger may divide its advertised wattage when several devices are connected. The right charger is therefore not the one with the biggest number. It is the one whose charging protocol, usable port output, cable, and safety credentials match the devices you actually own. Last reviewed: August 29, 2026 USB-C describes the connector. Charging performance depends on the device, charger, cable, port use, and temperature. Short answer: Start around 30W for a phone, ...

USB-C has made connecting devices more convenient, but the connector's identical appearance can hide very different capabilities. One USB-C port may charge a laptop, drive an external monitor, and transfer files at high speed. Another may handle only basic data and low-power charging. A third may support Thunderbolt and multiple displays. The connector alone does not tell you which one you have. That is why buying a USB-C hub, charger, cable, or display adapter based only on the plug shape can end in disappointment. The short answer Before buying a USB-C accessory, verify four separate things: ...