A huge recent improvement is support for Crust firmware (https://github.com/crust-firmware/crust https://github.com/crust-firmware/crust) which should get you 1

A huge recent improvement is support for Crust firmware (https://github.com/crust-firmware/crust https://github.com/crust-firmware/crust) which should get you 12-40 hours of standby (the low end is with wifi and cellular on, the high end is with them turned off. A day to a day and a half is the best I'm seeing) That just happened in the past month on most distros. Even with that installed and enabled, there is still significant room for improvement on power management of wifi and cellular. Mobian still has issues with things like random wakeups and not turning off the screen digitizer. I'll be very surprised if we can't see the standby time increasing to 3-7 days depending on what's enabled, but it will take time.