Depends on how low your battery was. Here's a quote from their november update: "CPU frequency scaling, device runtime PM (for select devices), hardware auto-P

Depends on how low your battery was. Here's a quote from their november update: "CPU frequency scaling, device runtime PM (for select devices), hardware auto-PM… even prior to this release, users could already get 10+ hours of idle runtime. With DCP and proper display DPMS, that now goes as high as 30+ hours (powered on, screen off)!" [...] "While s2idle does work, it’s in its infancy and we haven’t debugged all driver issues yet. Here’s what works: NVMe is shutdown WiFi goes into S3 mode Display (DCP) goes into DPMS (backlight & screen fully off) DARTs power gate & restore state on resume CPUs stay in shallow idle Some misc devices (i2c/spi/etc) power off Wakeup via power button or lid open " So they report 30 hours of battery life with display off (not sure if it was in s2idle or just normal screen off operation). So if you close the lid overnight, it should eat <30% of the battery.