This is a test of commonsense. Complete the next sentence:

How to save your laptop battery
Unplug devices from the laptop.
Any device plugged into the laptop, such as a usb device or a second monitor through vga, will require cpu activity to access these devices. Certain usb devices will require a high amount of power which will drain the battery faster, such as a fan which features moving hardware.
Unplug any devices that you do not need to use. Shutdown or activate sleep mode on your laptop when not in use.