iPhone Takes forever to charge from 90% to 100%

Discussion in 'iOS 12' started by 3lite, Oct 22, 2018.

  1. 3lite macrumors 6502a

    3lite

    Joined:
    Nov 7, 2011
    #1
    Device:

    iPhone 6 (original battery, never went to Apple for a battery change after the battery-gate scandal)

    So is it just me, or does the iPhone takes an unusually long time to go from 90% to 100% charged as opposed to any other range?

    I don't see this issue with my iPad Air (5th Gen) which is also running iOS 12.
     
  2. BugeyeSTI macrumors 68030

    BugeyeSTI

    Joined:
    Aug 19, 2017
    Location:
    Arizona
    #2
    Actually, when the battery reaches 80% it starts slowly reducing the amount of voltage that it charges at until it’s basically a trickle charge towards the end.
     
  3. Lobwedgephil macrumors 601

    Lobwedgephil

    Joined:
    Apr 7, 2012
  4. Yun0 macrumors 65816

    Yun0

    Joined:
    Jun 12, 2013
    Location:
    Winnipeg, Canada
    #4
    -Trickle charge
    -Dont use it while charging
    -Use a 2A charger
     
  5. NT1440 macrumors G5

    NT1440

    Joined:
    May 18, 2008
    #5
    What you’re seeing is by design. You get a faster charge up to 80%, the rest is trickle charging. Batteries of this chemistry don’t like being stuffed to the gills all the way up to 100% as it will dramatically impact the lifespan of the battery.
     
  6. tarsins macrumors 6502a

    tarsins

    Joined:
    Sep 15, 2009
    Location:
    Wales
    #6
    As others have said, it slows down to a trickle, You don't have to wait until it's at 100% before taking it off the charger, in fact it's probably better not to.
     
  7. Julien macrumors G4

    Julien

    Joined:
    Jun 30, 2007
    Location:
    Atlanta
    #7
    Almost all lit-ion batteries from Tesla's to drones work this way and it is NOTHING unique about the iPhone.
     

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6 October 22, 2018