Looking for a way to use your MacBook in the clamshell mode without having to connect a power adapter? Check out Amphetamine, a free keep-awake utility for MacBook.

My 2013 13” MacBook Pro has reached its limit for my work (design with InDesign/Illustrator/Photoshop mostly). I’ve been running two 24” Cinema Displays while in clamshell mode, and the ...

If you want to use your MacBook in clamshell mode without being hooked up to the charger, you'll need to prevent the machine from sleeping or shutting down when the lid is closed.

For some users, the new 16-inch MacBook Pro does not always charge when completely shut down, and others are dealing with external monitors not waking correctly in clamshell mode.

Update: As we suspected, True Tone does not work on external displays when the connected MacBook Pro is in clamshell mode. Eric Slivka contributed to this report.

Actually, I have the opposite problem: I usually put my MacBook Pro to sleep by closing it... but since it is attached to an external display, now it puts the machine in clamshell mode rather than ...

Sleep will put your MacBook to sleep as soon as you close the lid, even if there's another display connected. This is great if you use an external display but never use your MacBook in clamshell mode.

With the new release, Clamshell mode implements properly on lid-shut, even with a workspace spanning the MacBook Pro's internal display in conjunction with external displays.

Clamshell mode for macOS and Windows allows you to use a monitor as your main display, even when using battery power.