[chi_features]

I definitely felt the same with the battery life, until I switched on "Low power mode" while on battery (System Preferences > Battery > Battery > Low Power Mode). I don't notice the drop in performance (even whilst intensively using it, such as compiling code) but what I experience is practically the doubling of its battery life. Enjoy!

[als0]

Hmm I have been using low power mode since day 1 and it still isn't doing as well as the Air. I guess fewer efficiency cores will do that. I've removed all the x86 apps to maximize efficiency, but I'm still just under 14 hours. Have to say that the screen is lovely, though.