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11-22-2015 06:52 AM
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  1. iMore Question's Avatar
    iMore Question
    The battery usage will show a surprisingly low percentage but as soon as I plug it in, it will jump to a super high one. Ex. It was showing 5% and jumped to 75% as soon as it connected to a plug in. Do I need a new battery?
    11-21-2015 02:26 PM
  2. Rob Phillips's Avatar
    Rob Phillips
    Welcome to iMore! You might just need to calibrate your battery. Here's how:
    1. Charge your phone to 100%.
    2. Unplug it and Let your phone drain its battery down until it shuts itself off.
    2. Plug it back in and charge all the way back up to 100% without interruption.
    3. Reset your device by holding the power button and home button down simultaneously until you see the Apple boot logo.
    This isn't 100% guaranteed to work but it's worth a try. If you're still having a problem let us know!
    Last edited by DevilishBanker; 11-21-2015 at 07:32 PM.
    11-21-2015 02:52 PM
  3. robertk328's Avatar
    robertk328
    Champion
    Ambassador
    Moderator
    The advice @DevilishBanker provided is your best bet.
    What phone is it? If it's old it may just be a battery that is at end of life.
    11-21-2015 06:26 PM
  4. Ledsteplin's Avatar
    Ledsteplin
    Q&A Team
    Ambassador
    Sounds like it's seen better days and is at the beginning of the end. My iPhone 5 started doing that.
    11-21-2015 08:49 PM
  5. Rob Phillips's Avatar
    Rob Phillips
    Originally Posted by Ledsteplin
    Sounds like it's seen better days and is at the beginning of the end. My iPhone 5 started doing that.
    My iPhone 5 had the same problem too after about a year and a half. Calibrating helped but I think the battery had just met its maker.
    11-22-2015 06:52 AM
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