Why can't the Xiaomi 17 Ultra reach the maximum charging power of the included charger (100 W)?

If the Xiaomi 17 Ultra does not reach 100 W charging power when using the included charger, please refer to the following explanation:
1. The Xiaomi 17 Ultra supports a maximum wired charging power of 90 W. This is the designed upper limit of the phone’s internal charging architecture and battery management system.
2. The included 100 W charger is designed for broader compatibility. It can support other high-power devices such as laptops or external electronics, making the charger more versatile for daily use.
3. When charging the Xiaomi 17 Ultra, the power output will automatically adjust according to the phone’s supported charging protocol and safety strategy. It will not exceed 90 W, even if the charger itself supports higher output.
4. Charging power can also vary depending on battery level, temperature, and system protection mechanisms. Under certain conditions, the device can intelligently reduce power to protect battery health.
Note:
Whether package contents include a charger vary by country/region.