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Tip-Trick: 61 hours, 24% battery remaining

Discussion in 'Android Devices' started by robertdahlgren, May 26, 2010.

  1. robertdahlgren

    Thread Starter

    62 hours and 24% battery still remaining

    This is after my initial period of hammering on the phone and back to my normal daily usage pattern which is like a blackberry user (some phone calls in and out, lots of email, at least a few every 30 minutes during the day and early evening). What this means for me as a blackberry user is that I can now confidently switch over from blackberry to the Evo as primary phone and get through a normal day (16 hours) without needing a mid-day charge.

    Here are settings from my testing experience that I wish I had known when I first got the EVO at Google I/O:

    1. Add to home sense screen:
    widget: Power Control Android
    widget: settings, 4G
    widget: settings: Hotspot

    2. Install android market apps (free):
    Advanced Task Killer
    Spare Parts
    K-9 Mail

    3. Run Advanced Task Killer (some disagree, do what you want. I'll revisit and retest this when 2.2 gets released by HTC for the EVO. I don't need sprint navigation, sprint tv, etc. to ever be running since I will use google navigation. I haven't had time to do another endurance test without using ATK and I'm not planning to do another endurance test)

    Deselect things you actually want to keep running in the background, e.g.:
    voice dialer
    voice search
    google voice
    k-9 mail
    Kill selected apps

    ATK will put a notification up at each boot and remember your selections so it's easy to re-kill off all the sprint and other apps you don't normally want 'running' in the background.

    4. Turn off 4G and hotspot on the main page with widgets installed.
    Note: I found I don't need to disable gps or bluetooth since with streamlined apps running nothing is using them unless I want it to and I want my bluetooth to automatically pickup when I get in the car.

    5. Turn screen brightness to low or medium using widget icon. this disables auto brightness but the lower screen brightness seems fine for me. When outside in the sun just click it up if needed

    6. Settings Wireless and Networks, Wi-Fi Settings, <menu button> Advanced, Wi-Fi sleep policy, Never.
    It's a bit counterintuitive, but I've tested it out both ways and confirmed the articles that recommend this. The phone uses dramatically less power in this state as opposed to auto sleeping wi-fi which turns on the 3G radio. Dramatic as in without keeping wi-fi alive overnight my battery went from like 70% to almost nothing during earlier tests.

    7. <optional> Run the battery from a full charge to completely drained once. I'm not sure if this had an effect or not, just putting it in because I did it once before this current long runtime since charge to make sure the battery was properly profiled. It's easy to do with 4G on and watching HD youtube videos.

    8. K-9 versus gmail client. I'm seeing much more cpu usage from gmail client versus K-9. I have work email on a host service that supports imap idle (rackspace). The imap idle push seems to really save on cpu usage and my work email delivers as fast to the Evo as it does to my blackberry. I like the gmail client for my personal mail but may end up switching my gmail.com to deliver via K-9 instead to really save on battery. Needs more exploring but it appears the gmail client 'push' is not as efficient as the imap idle.

    9. Summary, when you want to show off your 4G Youtube HD or use the phone as a mobile hotspot, just click on the 4G and away it goes. But normally keep that radio off since you don't actually need it and it's a huge power drain. With the widget installed this becomes an easy habit.



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  2. Ilya

    Ilya Android Enthusiast

    Thank you!
  3. SprintFun

    SprintFun Android Expert

    Eventually I think we're going to have a "Tips & Tricks" forum - this will be a great addition there.
  4. SoFLO

    SoFLO Guest

    That's absolutely insane uptime! I'll definitely check back on this thread when I get my EVO.
    mspooh2126 likes this.
  5. Roman G.

    Roman G. No-Posting Probation

    I thought ATK was a root program?
  6. YaBoiD

    YaBoiD Android Enthusiast

    Thanks for the info man
  7. aliveon2legs

    aliveon2legs Android Enthusiast

    Post bookmarked. Thanks!
    mspooh2126 likes this.
  8. drexappeal

    drexappeal Extreme Android User

    Awesome news! That's the type of battery life I was hoping to acheive. Man, even a full day with on and off use would be great compared to the Touch Pro.
  9. jtemple42000

    jtemple42000 Newbie

    If I can get my Touch Pro to last 18 hours, I'm thrilled.....

    Imagine how good the battery life will be with 2.2 installed.....
  10. drexappeal

    drexappeal Extreme Android User

    I'm thrilled if I can make it throughout an entire day! 18 hours would almost be a miracle.
  11. Roman G.

    Roman G. No-Posting Probation

    I am thinking of a different one, what is the one that comes with the custom roms, man it's been less than a week without my Hero and now I am forgetting shit, come on June 4th.
  12. Scarlett920

    Scarlett920 Member

    Great post! I sit at a desk all day so I never really have to worry about battery life but for long trips without being able to charge this is good to know.
  13. Bek

    Bek Android Expert

    Android OS & Display @ 4% and 2%? Are you actually using the phone much, or is it just sitting around mostly?
  14. esone1ll

    esone1ll Android Enthusiast

    Great idea.
  15. Nem_Zero

    Nem_Zero Member

    This is so awesome. I probably won't get this kind of battery life because I'm big on data use with a phantom 4G network (DC) that hopefully goes live officially by EVO launch. I'm sure this will significantly increase it's alive time after a full charge/use to full drain/full charge.
  16. Roman G.

    Roman G. No-Posting Probation

    good catch I missed that. And with those both being so low, you should kill your wifi as it's obvious that your not using the phone.
  17. robertdahlgren

    Thread Starter

    As I wrote, I use it at least every 30 minutes during waking hours.
    There are other things at 2% and lower. The reason they have moved to such a low '%' on this test is the 63 hours of uptime.
  18. mak916

    mak916 Android Expert

    This is great news!
  19. robertdahlgren

    Thread Starter

    And remember, my goal was to find settings where I can get 16 hours out of a battery on a normal day. I'm rather surprised and happy to be pulling this much time at the moment too. Mossberg's reviewed had me worried I couldn't move to this phone as a primary phone.
    drexappeal likes this.
  20. robertdahlgren

    Thread Starter

    For the trolls in the audience, via the spare parts app (an excellent free app), a quick screen shot of some of the applications which are a much smaller cpu usage time versus the OS and phone level applications.

  21. Bek

    Bek Android Expert

    Yep, and I find it to be a valuable exercise, so thank you for posting & sharing!

    My reason for pointing out your usage statistics and asking, was to hopefully get a little more in-depth detail & clarification on how you use your phone. We all use our phones differently, so what you may call "moderate usage" might be "light" in my book.
  22. Rizop

    Rizop Member

    Thanks for the great tips! I'm in the processing of applying these changes right now
  23. SirSlayer

    SirSlayer Android Expert

    Let the Argument begin! for all you new Android Users you need to read this article. He may have had great battery life for his phone but he didn't use it. This article will explain why task killers are not good for android and shouldn't be used. This isn't windows OS. I never use one on my android and it works great with no lag on a Hero running 2.1 and Eris running 2.1.

    Enjoy the read!

    FAQ: Why You Shouldn&#8217;t Be Using a Task Killer with Android Geek For Me – Android CDMA Sprint Hero

    Just want people to be informed before they mess up the phone have to hard reset. I hope you all find it useful.
  24. robertdahlgren

    Thread Starter

    I'm also lucky to have 4G coverage.
    But look what happens to that 22% remaining battery when 4G is on for a bit, bam. So that's why it's normally off unless needed. Do you leave your car A/C on all the time in winter just to drive down your gas mileage? My personal preference is to just turn it on when I actually need it for something but get used to leaving it off by default.

  25. gabe2gg

    gabe2gg Lurker

    wanna give us a update on how the battery is today?

HTC EVO 4G Forum

The HTC EVO 4G release date was June 2010. Features and Specs include a 4.3" inch screen, 8MP camera, 512GB RAM, Snapdragon S1 processor, and 1500mAh battery.

June 2010
Release Date
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