As you may or may not know, many changes take place to each users system as a whole. Each user has different apps and setups. This is true for people who mod or people that have a reflashed or stock phone. This happens straight out of the box as well. There is no absolute in life nor technology and each situation is different. This is even true when using a phone normally. I myself have seen, for instance, my XT912, GNEX, and LG G2 having these issues. It didn't matter what type of battery I had. Right out of the box battery life was not nearly as long as the reported manufacturer specs. Each time I reset the device to factory settings and add or remove certain apps, I can tell a difference for a few days until I complete a few charge/discharge cycles and other apps settle into their routine. This also allows the system to reset its battery statistics for more accurate reporting. IDK how else to explain to you better other than to use my own example, across several devices. I will say that you have been fortunate in this regard versus others with battery life problems after their 5.0 update. You may also see other posts, recently, referring to random reboots, volume levels, calling issues and etc... With multiple issues it is sometimes advised to factory reset. So, suffice to say, it isn't the same for everyone.
) with it plugged into a charger and be at 100% upon getting to work. Today after the update, I arrived at 87%, 10-20 mins later after sending/receiving 3 text messages (TURNED off GPS and MAPS) my battery is down to 75%. What a joke. Very disappointed in the crazy drain.