Battery life that needs to last all day is a first world computing problem. Most people leave their laptops plugged in and as long as you don’t run 10 chromium apps or other reasource hogs in the background, you will easily get 10-12 hours of battery.

I understand the battery life sucks, but 8 hours is enough for me.

That said I don't have high CPU processes running all the time. If I did I imagine the battery life difference would be more of a problem.