It usually takes 2-3 hours. According to the computer model and power supply mode, the power consumption is also different, and the specific situation is subject to the actual situation. When the battery is used alone, the wireless function can be turned off, the screen brightness can be reduced, and the power supply can be selected as energy-saving mode to prolong the battery life.

The system defaults to this mode. If you want to change this mode, you can do the following:

1. Open the control panel and click "Power Options".

2. After selecting the desired performance option in the power options window, click Exit.