Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to save your laptop battery [title] Unplug devices from the laptop. [step] 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.

Ending1: [title] Remove filters or emacs from the boat. [step] Filters are accessories which your computer or monitor will be exposed to and move quite often. Ending2: It may be a good idea to switch to one of these options. Select your device from this list and unplug. Ending3: [title] Shut off all electronics except for off-screen devices. [step] Power off all your personal devices, including anything that is plugged into the laptop. Ending4: Unplug any devices that you do not need to use. [title] Shutdown or activate sleep mode on your laptop when not in use.

Answer format: ending1/ending2/ending3/ending4