[Nexus 4 Original Android Development] Ok_Kaleidoscope5109:
So the past couple of days I've been seriously testing battery.

Summary:

r83: 6.8% / hr

r85: 5.8% / hr

r86: 5.5% / hr

Not sure if statistically different though.

I use my phone primarily on 3G, except when I'm in a specific office where I get zero reception. I believe that's how phones were made. I sync the following on my Nexus 4:

- Gmail (push)

- Latitude

- APW Timeline (2 hour refresh for twitter & facebook)

- Beautiful Widgets (3 hour refresh)

- Exchange email for work (using Touchdown)

- Twitter app (4 hour sync, but only for notification purposes, so I guess it does push)

- Whatsapp

And for reference I use an iPhone 5 for work which I sync:

- Exchange mail (24 hours, Android can control peak times)

- Facebook, Twitter, Google+ all on push

I'd like to say that during testing I try not to use my phone much. Just to read my gmail quickly and move on. You can probably see screen time isn't even a major factor in any of these screenshots. I occasionally pop on to reply to a few Whatsapp chats going on with my friends, but for the most part I try to limit phone use. Instead of using Gchat on my phone, I used Gchat on my iPhone instead which I left on push to talk to my friends. I also surfed at lunch on my iPhone regularly using Verizon LTE.

2/18: Franco r83

- 4 hr 51 minutes on 3G data at home

- Battery: 97% to 64% (6.8% / hr)

- hsic wakelock @ 30% (typically above 30% in my previous complaining posts here)

2/21: Franco r85

- 9 hours 11 min on 3G. I'm stuck in offsite training all day. Far better reception and data than my office. Graph shows green for data quality, with a few spots of yellow.

- 100% to 47% (5.8% / hr)

- The only thing extra was I punched in 3 passcodes for Ingress, but that's probably like 1-2 minutes tops of Ingress/GPS.

- hsic wakelock @ 13.5% only!

2/22: Franco r86

- 5 hours 16 min on 3G at home. Decent/good reception. Phone sat by my bed.

- 93 - 84% (1.7% / hour)

- I don't sync Exchange at night! But everything still goes! Quiet hours disables sounds AND notification light. Is Lightflow an issue here?

- iPhone 5 @ 78%

2/22: Franco r86

- 8 hours 29 min on 3G at training again. Probably looked at my phone less than 2/21

- 100% to 54% (5.5 % / hr)

- hsic wakelock @ 9.9%

- iPhone ended the day at 72%

Quiet honestly, the battery use of my phone is still steady whether it's r83, r85, or r86. As I stated before, I think some people take the wakelock too seriously in that they think wakelock = 200x more battery consumption. In these 3 days I think the battery usage is a bit better. Maybe the r83 battery use was a little better than expected because Monday was a holiday in the US for many companies so not many emails came through. Anyway, I whether the wakelock is a noticeable difference in terms of battery consumption I don' tknow. Either syncing Exchange or Lightflow is draining my battery away, because in all these cases I surfed on my iPhone and typed out actual emails on my iPhone during this time. If we were to calculate screen time, I'm pretty sure iPhone got way more screen time. I'm quite impressed by the iPhone 5. In fact I'm going to tip the scales the next time I run a test and make the iPhone do the latitude syncing. For those of you who say iPhones suck, seriously, I've gone through 5 Android phones since 2010, and I have all THREE 2012 Nexus devices on my bed, and I've owned an iPad 2 before. I hope someday Android products will learn to sip battery as lightly as iPhones.

Looking at the raw data, I didn't use my phone much, so if I were to use it more liberally and surf during the day and not have my iPhone, I would imagine going home with roughly 20-30% battery tops. Going back to the point about the wakelock, I don't think it's as harmful as some people are making it sound, although I probably need some further testing. The fact that these 3 kernels are operating at 5-6% drain per hour on a light use day at work tells me something is up. I don't get how people run with < 1% / hour because I can't even get that at night! Maybe I'm syncing too much.

Also note that I was planning on doing a r83 test for 2/22 but never got the chance to because Touch Control got updated, so I decided to stick with r86 :D. Perhaps I can try r83 on next Monday morning for work.

Raw r83 data:

Raw r85 data:

Raw r86 data overnight run:

Raw r86 data: