To be fair, i am not sure whether it should be considered as normal or abnormal due to lacking of things to compare with. but according to your wiki page, with magic lantern, it comsumes power than only the original firmware, because "Magic Lantern disables CPU powersaving features".
Sure, the magic lantern is so powerful when we need the dual ISO, the RAW recording,... thanks for the effort on making these happened. But think about this, what if we are on the trip, and only 1 battery left...
So, here is my question. Is it possible to "keep the CPU powersaving features" if we turn off all the magic lantern modules??