Scheduled startup/wake while on battery power I would like to automatically turn my Macbook Pro on at a certain time in the future (preferably with Terminal). However, I found out that this does not work when the computer is not connected to a power source. Is it possible to be able to do this on battery power?

I tried to use pmset schedule wakeorpoweron but that also only works on AC power.

(I need to be able to do this so I can run a program at a certain time of day. And I do not want to use caffeinate because it would drain the battery significantly more)
No, you can not schedule your Mac to power on when it is battery powered.

Design Choice &amp; Deliberate Limitation

A scheduled power on event requires the Mac be connected to mains power. This is a deliberate limitation enforced by Apple's engineers. This is to protect your Mac from powering on while in confined or poorly ventilated spaces such as in luggage. In these situations your Mac risks overheating and being damaged.

Being able to power on while on battery is a common feature request to my Power Manager software. Sadly it is not possible without risking damage.