iPhone 3Gs battery dies at 30%

Discussion in 'Jailbreaks and iOS Hacks' started by RRRize, Sep 10, 2011.

  1. RRRize macrumors regular

    Joined:
    Jul 5, 2008
    #1
    My 3Gs is jailbroken for over a year now and it's been pretty stellar until last week. The phone just dies out when battery gets down to 30%.

    Does anyone have any clues as to what I can do to resolve this?

    My iPhone specs are as follows:
    iPhone 3Gs 32GB
    iOS 4.0.1
    Baseband 05.13.04

    Any help much appreciated!
     
  2. IrishVixen macrumors 68020

    IrishVixen

    Joined:
    Jun 20, 2010
    #2
    Download BatteryInfoLite (free) from Cydia to determine just how far off your current charge capacity is from the design capacity. Batteries lose their ability to hold a full charge over time, and the built in display meter just isn't always accurate.

    If that's not the issue, BatteryDetective (same author, I think, but it's a paid app) might help you determine which app is causing the problem. While I haven't personally used it, others here recommend it highly.
     
  3. kbfr08 macrumors 6502

    kbfr08

    Joined:
    Mar 16, 2007
    #3
    Just go ahead and replace the battery. Easy enough repair, just follow ifixit's instructions. You need to order a 3GS battery, not a 3G battery, even though they're identical, using the wrong battery will cause issues.
     

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