After a few days my battery life has stabilized and I am looking to push back in the other direction. I have only used the calendar complication but today added battery, weather and activity. With 50 minutes of useage and 2 hours and 30 of standby I am already at 87%. (The 50 also seems high for this time of day - possibly the increased complication use?) Are activity and battery complications less battery hogs as they don't tap into location services like weather? Bottom line - if it dents my battery, I can pull the complications and use glances. But for convenience and given so many others seem to use them I wanted to ask.