My iPhone shut off at 35%

Discussion in 'iPhone' started by dannyyankou, Nov 18, 2014.

  1. dannyyankou macrumors 604


    Mar 2, 2012
    I was using my iPhone 5s for about 10 minutes in 30°F weather, and it suddenly shut off at 35% it had the low battery screen when I tried to turn it on, and when I plugged it in it was back at 35%.

    And just know when I was typing this, it went from 30% to 13%. Is this weather related or should I be worried?
  2. Chatter macrumors 6502a

    Jun 10, 2013
    Uphill from Downtown
    Total guess but this probably isnt weather related. Could be a battery weakening issue. I had similar issues but on my Android and the battery was losing charge. Maybe someone else on here who has experienced this on an iphone can help better.
  3. dannyyankou thread starter macrumors 604


    Mar 2, 2012
    And I just restarted my phone and it just went back up to 34%. Maybe it just had to warm up a bit. I'll check the battery health later.
  4. Jschultz macrumors 6502a


    Mar 14, 2005
    Chicago, IL
    I have a hunch that extreme swings in temperature cause the phone to act funny. I'm in Chicago, and it's been about 10 degrees yesterday morning and this morning. I could have sworn that I saw some odd battery fluctuation as well what seemed like 'frame dropping' which was probably the LCD being too cold to keep doing its thing. I have a 5S too.
  5. nburwell macrumors 68040


    May 6, 2008
    It could certainly be the weather, so I would keep an eye on your battery for the next couple days. If it continues to act up, you may want to schedule a genius appointment at your nearest Apple Store.

    I will note that when I had my 5, I would be outside at night in the dead of winter taking pictures of the stars. While my camera was doing it's thing, I would take my phone out and check Twitter, texts, email, etc. There were numerous occassions where my phone would die around 30%. However, as soon as I plugged it in my car charger, the phone would turn right back on. The point to get out of this is that it could certainly be related to the cold weather.
  6. deeddawg macrumors 604

    Jun 14, 2010
    Batteries 101: colder batteries have lower charge capacity before the voltage drops off.

    (battery meters are typically just reflective of the battery voltage which declines as the battery discharges, especially in cold weather. Most rechargeable batteries have a sharp drop-off of voltage as they exhaust the stored charge. When cold that drop off can occur at a higher voltage than normal, thus causing the item to "die" suddenly with a higher than expected capacity displayed.
  7. dannyyankou, Nov 18, 2014
    Last edited: Nov 18, 2014

    dannyyankou thread starter macrumors 604


    Mar 2, 2012
    Now that I think about it, I had a similar experience with my 4s last year.
    I guess it's the price I pay for living in a cold climate.
  8. Newtons Apple macrumors P6

    Newtons Apple

    Mar 12, 2014
    Jacksonville, Florida

    If outside in very cold weather you phone needs to be inside you coat to keep it warm. IF left out in the cold, like left in your car overnight in subfreezing, it may not even turn on no matter how much battery is left.

    Also be very careful about bringing a cold soaked phone into a warm moist enviroment as water can and will condense, even on the inside of the phone, and set off the moisture inicators, voiding your warranty!
  9. bjgpp macrumors member

    Jun 18, 2010
    Southlake, TX
    My 5 did the same thing last year...turned out to be a defective battery. Luckily my 5 was still under warranty and the battery was replaced for free by Apple.
  10. ot73nl macrumors member

    Jun 12, 2007

Share This Page