The 13” Macbook Air is advertised to get 15-18h and 14” MBP 15-22h, and real world numbers with light-to-midweight usage is pretty close to that. My work/person

The 13” Macbook Air is advertised to get 15-18h and 14” MBP 15-22h, and real world numbers with light-to-midweight usage is pretty close to that. My work/personal 16” M1 Pro/Max MBPs can end a day of work in Xcode and/or Android studio with 40-50% battery left. They do this out of the box with zero tweaking and have zero performance difference between plugged in or unplugged (no throttling). My ultraportable (ThinkPad X1 Nano Gen 1) gets 5-7h on a good day with the system set to “power saver” mode, with little difference between Windows and Fedora. If I’m juggling several tabs or doing anything slightly more intense it’s going to be lower. The best x86 ultraportable option I’ve seen from current gen offerings is probably the HP Dragonfly G4, which if configured with the 1920x1280 screen and lowest-TDP CPU can manage around 14h which sounds ok, but efficiency still isn’t as good as with the MacBooks because it’s only capable of that with light usage because it has a 16Wh larger battery than a Macbook Air, has a lower resolution display that’s about half as bright, and has to be in power saver mode.