Battery dropped over 20% in a couple hours??

Discussion in 'iPhone' started by tsduke, Nov 29, 2011.

  1. tsduke macrumors regular

    Joined:
    Oct 10, 2011
    #1
    My battery literally went from low 90's to 70% in maybe 2.5 hours. I didn't use it once in that time.
     
  2. Jordan921 macrumors 68040

    Jordan921

    Joined:
    Jul 7, 2010
    Location:
    Bay Area
    #2
    Was something running in the background?
     
  3. tsduke thread starter macrumors regular

    Joined:
    Oct 10, 2011
    #3
    Not that I know of. I was in the app store and itunes over lunch. I just killed them, but I lost another 4% in last 20 minutes.
     
  4. digitard macrumors 6502a

    digitard

    Joined:
    Sep 15, 2004
    Location:
    Gilbert, AZ
    #4
    Let it drain/die and then put it on the charger until it's full.

    Could be either:
    - iOS 5 Battery issues (should be fixed in 5.1/5.0.2 as they're working on it).
    - Battery calibration being buggy. Kill it and reacharge completely and it should recalibrate.
    - Some people have reported that after iOS 5 they had this, but doing a restore as a "new" phone fixed it. Possibly something carrying over from iOS 4 being buggy in iOS 5.
     
  5. tsduke thread starter macrumors regular

    Joined:
    Oct 10, 2011
    #5
    All steps I've taken to improve battery life. I've let it drop until it shuts itself off 3 times now. The last time being 4 days ago. I've never seen it drop like this. It's still dropping.
     
  6. digitard macrumors 6502a

    digitard

    Joined:
    Sep 15, 2004
    Location:
    Gilbert, AZ
    #6
    I'd say restore then. Something may have become corrupt/conflicted.

    Other option is remove things one by one to see if something is eating away in the background.
     
  7. tsduke thread starter macrumors regular

    Joined:
    Oct 10, 2011
    #7
    I've closed everything and it's still dropping.

    Restore to what?
     
  8. digitard macrumors 6502a

    digitard

    Joined:
    Sep 15, 2004
    Location:
    Gilbert, AZ
    #8
    Plug your phone into iTunes and choose the Restore option.

    You can try to restore from a sync'd backup and see if that helps, but otherwise I'd setup a new phone to be safe just in case something is bugged.
     
  9. tsduke thread starter macrumors regular

    Joined:
    Oct 10, 2011
    #9
    Which means I would lose all my app and folders organization?
     
  10. PaulyD macrumors 6502

    Joined:
    Nov 16, 2010
    Location:
    UK
    #10
    try a hard reset first before restoring. Close all apps then hold home and sleep button together until you see the apple logo
     
  11. vitzr macrumors 68030

    vitzr

    Joined:
    Jul 28, 2011
    Location:
    California
    #11
    While we wait for Apple to try and fix the battery issue, here is a list of handy links.

    They will help you check your battery issue against those of others and see for yourself, if yours is in the range of those that have issues.

    http://forums.macrumors.com/showthread.php?t=1282558

    http://forums.macrumors.com/showthread.php?t=1280638

    http://forums.macrumors.com/showthread.php?t=1277062

    http://forums.macrumors.com/showthread.php?t=1265841

    http://forums.macrumors.com/showthread.php?t=1256077

    http://forums.macrumors.com/showthread.php?t=1273619

    http://forums.macrumors.com/showthread.php?t=1166376

    http://forums.macrumors.com/showthread.php?t=1283826

    http://forums.macrumors.com/showthread.php?t=1254825

    http://forums.macrumors.com/showthread.php?t=1273951

    http://forums.macrumors.com/showthread.php?t=1071024

    http://forums.macrumors.com/showthread.php?t=1282370

    http://forums.macrumors.com/showthread.php?t=1281910

    http://forums.macrumors.com/showthread.php?t=1274219

    http://forums.macrumors.com/showthread.php?t=1274024

    http://forums.macrumors.com/showthread.php?t=1272439

    http://forums.macrumors.com/showthread.php?t=1269654

    http://forums.macrumors.com/showthread.php?t=1265813

    http://forums.macrumors.com/showthread.php?t=1261881

    http://forums.macrumors.com/showthread.php?t=1260044

    http://forums.macrumors.com/showthread.php?t=1259296

    http://forums.macrumors.com/showthread.php?t=1187395

    http://forums.macrumors.com/showthread.php?t=1182037

    http://forums.macrumors.com/showthread.php?t=1164723
     
  12. thatoneguy82 macrumors 68000

    thatoneguy82

    Joined:
    Jul 23, 2008
    Location:
    Beach Cities, CA
    #12
    This has happened to me before. Battery dropped quickly, phone was warm and usage and standby times were the same. After fiddling around and restoring, these two things stopped it, turning off iCloud backup backup (if you use this, do it manually, then turn it off after it backs up). Second, Reset All Settings, not content or data, just settings. That will be almost as good as a restore, especially if you restore from backup.
     

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