You cannot change the resolution of the display within Mac OS, as it will always run at the displays native resolution. You can change the DPI scaling somewhat though, to make it appear different, but the resolution is the same.
The battery is not likely to be affected severely by resolution.
If you are having battery life issues, consider reducing screen brightness, reducing keyboard backlight (or disabling it if you don't need it), and not leaving CPU or GPU intensive applications open in the background.
You cannot change the resolution of the display within Mac OS, as it will always run at the displays native resolution. You can change the DPI scaling somewhat though, to make it appear different, but the resolution is the same.
Sure you can. I run at 1680x1050 and 1920x1200 (from time to time when I need more room). However, you are not stuck at the puny retina display of 1440 x 900 (though it does look nice).
Sure you can. I run at 1680x1050 and 1920x1200 (from time to time when I need more room). However, you are not stuck at the puny retina display of 1440 x 900 (though it does look nice).
probably because the GPU will work less hard, but you still have 2880*1800 pixels to power physically regardless.
I recommend Retina Display Menu; its free and works flawlessly.