Battery life accuracy.

Discussion in 'iPhone' started by antisomnic, Oct 15, 2017.

  1. antisomnic macrumors regular


    Jul 6, 2012
    Hey so I'm wondering something. How long does it take the iPhone to display an accurate battery percentage? I've had my 8 plus for about 3 weeks and if I reboot my phone (cause of ios bugs) and my phone is at >95% when it reboots it will display 100% battery life. Obviously one of these two numbers are incorrect.
  2. fartnugget213 macrumors member

    Apr 6, 2017
    When I upgraded to ios11, for roughly 2 days it would go from 98% to 100%.

    I'd charge my phone from anything below it and the moment it hit 98% and I happened to turn my screen on, it would jump to 100% instantly. Same thing happened at 99%.

    It randomly went away after a couple of days so I'm happy about that.
  3. antisomnic thread starter macrumors regular


    Jul 6, 2012
    I just rebooted it because it started playing the wrong tone for text messages (an ios 11 bug i am experiencing), it went from 100% to 94%
  4. Shadowbech macrumors 601

    Oct 18, 2011
    Planet iPhone
    Phone still displays 100% even if your actual battery is at 95%. Install Coconut battery on your MBP and you will find out. When at 99%, it's actual is 94%. Currently % on my phone is 65% and reading from coconut battery it shows 61.4% (Since I have the Coconut Plus, it's reading it wirelessly)

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3 October 15, 2017