I don't know how any real world application can get 16 hours of battery. Lol Not that I ever believed it anyways.
I have my screen brightness at 30%, Battery saver is ON, refresh rate is 120hz, 2 programs open in a split screen being used and my battery goes down about 15% an hour.
I'm curious to try reducing the refresh rate to 60hz and see how it improves.
Other than the battery I do love the Surface Pro 8.
i7, 256SD, 16gb Ram, LTE.