Iphone 5S battery drops from 15-20% to 1%

Discussion in 'iPhone' started by kingc0bra, Sep 2, 2015.

  1. kingc0bra macrumors regular

    kingc0bra

    Joined:
    Nov 27, 2012
    #1
    So I've noticed that recently my phone drops from 15-20% battery life right down to 1-4% without going through the percentages in between, so frustrating because I'll be using the phone thinking it still has 20% then next thing I know it dies on me...

    Has anyone had this issue?

    Is there a way to find out the battery cycle number of my phone?
     
  2. willmtaylor macrumors G3

    willmtaylor

    Joined:
    Oct 31, 2009
    Location:
    A Natural State
    #2
    Temperature fluctuations?

    Run it all the way down. Let it sit for a while. Plug it in. Don't turn it on until charged 100%.

    Battery health app: http://www.coconut-flavour.com/coconutbattery/
     
  3. niji macrumors 6502a

    niji

    Joined:
    Feb 9, 2003
    Location:
    tokyo
    #3
    i don't know about it being a regular occurrence on a 5s but on a 5, yes, this is a regular occurring thing.
    you can try to recalibrate the battery and try turning off always-on location following settings and things like this, but the batteries in original 5 are just too old now and increasing subject to jumps like this.
    for battery jumps like yours on a 5s i haven't seen too many stories about it.
     
  4. niji macrumors 6502a

    niji

    Joined:
    Feb 9, 2003
    Location:
    tokyo
    #4
     
  5. rockstarjoe macrumors 6502a

    rockstarjoe

    Joined:
    Jun 2, 2006
    Location:
    washington dc
    #5
    My 5s does this too. The battery percentage actually seems to get stuck at around 20%. Then right around 5% it starts updating again. I don't think it is draining faster than normal (although it does drain quickly because it is old). It just isn't updating the percentage correctly. I've tried restoring the phone but no luck.
     
  6. kingc0bra thread starter macrumors regular

    kingc0bra

    Joined:
    Nov 27, 2012
    #6
    This is what I got for my iPhone battery details when using coconut battery
     

    Attached Files:

  7. kingc0bra thread starter macrumors regular

    kingc0bra

    Joined:
    Nov 27, 2012
    #7
    Is the load cycle too high? Seems like based on the numbers, the battery can still hold a charge almost the same as new
     
  8. Christian 5G macrumors 6502a

    Christian 5G

    Joined:
    Jun 16, 2010
    Location:
    Orange County, CA
    #8
    OMG lol I had this happen to me today when I went for a run.

    The phone went to 5% from 20 and then to 1% and turning off.

    I have 5S also.
     
  9. Lukkee24 macrumors 6502a

    Joined:
    Sep 20, 2011
    Location:
    London
    #9
    My 5s does the same sometimes, and when I'm not on wifi I only get 2-4 hours of usage. If I then plug my phone in when it's on just a few %, it'll jump up from for example 2% to 9% just from plugging in the charger. Tried restoring and charging to 100% then letting it run out etc but the problem still exists.
     

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