That was my point from the start.If I run the two laptops with the same tests, why would it matter? I want to see how long each laptop runs using the same tests. Since I intend to use either one, whichever one that has better battery life
"Since you seem to want to compare two different laptops for overall battery longevity, a similar workload on both would seem to do the trick. "
Run both with the same workload, no matter what it is.
See which one lasts the longest.