[Motorola Atrix HD] boufa:
If you look at your chart near the first charge cycle, you have a sudden drop off. Do you know what caused that?

In concept, straight down drop offs like that shouldn't happen. The battery should not be so rapidly discharging. I had that situation and it was happening all the time. It would drop off a little, or sometimes 50-70% would suddenly discharge. I actually had it plugged into the car charger, and the drain was so fast that it turned its self off. I did an exchange through AT&T to a new unit and I have not seen that activity since. There is a slight possibility that it was a misbehaving app, but I doubt it. Otherwise your battery life looks good.

---------- Post added at 08:44 AM ---------- Previous post was at 08:25 AM ----------

I was very unhappy with the battery life on this phone. Of course a lot can effect it, but it seemed stupidly short. A normal day at work, I would maybe make 15 minutes worth of calls, and a couple of txt msgs, little or no browsing, and only get 6 hours of battery! I had factory reset it a few times, but of course I would re-install the same apps over and over again. The reset most likely eliminated the battery draining app, but then I would immediately re-install it, like a fool.

After flashing the leaked JB, I started to notice a few things about the battery usage. So I decided to try some tests. Instead of being sociable at my in-laws during thanksgiving, I factory reset my phone. Only this time I did not re-install everything. My suspicion (since the battery drain seemed to be in the Android OS) was a misbehaving launcher (Apex Pro) or widget (ADW). My third suspect was skype (the hacked version from XDA).

I installed, waited, looked at battery use, then uninstalled, and repeated with each of the various suspect programs. I started to get the feeling that skype was the issue. The nice thing about doing this during thanksgiving is I got no calls, and no texts to skew the results.

The results... skype (the hacked version) was destroying my battery... even when it was only sitting in the notification bar being unused. I could see the nearly exact time that I turned it on and the battery use chart would drop off, then I would exit the program and it would level out.

The next day, I decided to try the official app (I really need skype to work somehow) rather than the XDA hacked version. I installed it, let it be on a fully charged battery. The results, I went from 5am until midnight.. 19 hours on a battery charge, with a couple calls, a couple emails, moderate browsing/twitter. A total of about 2 hours of screen use, wi-fi on all day (though I was not near wi-fi signal for several hours). It was what I would call normal use and I still had 32% left at the end of the night.

I am going to see if I can get the same results today and post a screen shot.

To be fair, the official skype app was updated (a major update) last week. So I cannot fairly compare the hacked one vs the official one. There are not a lot of reports of battery issues with the hacked Skype, and most of them are attributed to the type of service skype is. Maybe its a unique interaction between our Atrix and the skype app. Also skype no longer says that our phone is not supported when the official app is installed.

So the moral of the story... the Atrix HD IS capable of great battery life. I have become a believer. I hated the battery life on this thing since the day I got it (so much so that I bought a refurb Samsung Note from AT&T on black friday for $29), but now I am starting to see the light. And since this is going to become my wifes phone... I needed it to just work.