Default [Q] Why do AOSP ROMs have such a high battery drain?
Hey guys,
in the past few weeks I flashed around 10 different ROMs (AOSP builds like MIUI, CM9, CM7 and also tweaked Samsung builds like JetPackMod, S.U.R.F.A.C.E and Darky's ROM). I would have stayed on one of the AOSP builds but they just have a way too high battery drain.
For example: On stock JVU with Galaxian Kernel I lose 30 percent after 1:30 hour of display on. MIUI/CM7 my drains my battery to zero after 2 hours display on time.

So my question is: Why do AOSP ROMs have such a high battery drain compared to Samsung ROMs?