Battery stays at 100% for too long

Discussion in 'iPhone' started by Samitch, Jul 4, 2016.

  1. Samitch macrumors newbie

    May 19, 2016
    I got a new iPhone 6s plus a few days ago and updated it to iOS 9.3.2 on day one.
    I've noticed that when taken of the charger after being left to charge overnight, the battery stays at 100% for too long (sometimes 30 minutes of facebook browsing). Is this normal?
  2. RadioGaGa1984 Suspended


    May 23, 2015
    Now we're gonna complain cuz the battery lasts too long? SMFH
  3. mrex macrumors 68030


    Jul 16, 2014
    does it drop then to e.g. 87% or is the next step 99%?
  4. BigMcGuire Contributor


    Jan 10, 2012
    This is normal. The battery % indicator is simplified for users - so sometimes, if you are charging and the phone says 100% it is really at 93-95% and will continue to "trickle" charge to 100% - which is why some 100%s last longer than others. My iPhones have done this for awhile now.
  5. Spink10 Suspended


    Nov 3, 2011
    Typically 100% last longer then the other percentages.
  6. Samitch thread starter macrumors newbie

    May 19, 2016
    That can sometimes be a sign of a faulty battery.
    It drops to 99%.
  7. Matthew.H macrumors 6502


    Sep 16, 2015
    Norwich, UK
    Yeah 100% tends to be 95% and above. My macbook battery indicator shows 100% when it's really at 95%.
  8. T5BRICK macrumors G3


    Aug 3, 2006
    Turn the percentage indicator off.

    Charge your phone when you can and run it off of the battery when you need to. There is no reason to be this anal about battery usage. It's a phone. You'll upgrade it in a year or two anyway.
  9. BigMcGuire Contributor


    Jan 10, 2012
    This is the best advice ever. As someone with a battery OCD, this is the single greatest thing that helped me enjoy my iPhone/iPad :).
  10. IFRIT macrumors 6502a

    Oct 15, 2012
    Did you read what he actually said? OP this is normal for iOS devices.
  11. AintDutchNotMuch macrumors regular


    Sep 14, 2015
    The Netherlands
    OP doesn't seem too anal about it. It's a simple question he asked because it's probably his first iPhone and he never had this before with other phones, therefore he wanted to know if it's normal. And actually the battery percentage indicator is a VERY useful thing imo.
  12. joeblow7777 macrumors 603

    Sep 7, 2010
    It's fine. The drop from 100% to 99% sometimes takes the better part of an hour on my iOS devices, but it all evens out over the course of the complete discharge.
  13. megagene macrumors member


    Feb 25, 2016
    Yeah, that weirds me out too. My 6s is my first iPhone ever and it's strange how the battery percentage stays at 100 for like, 5 hours even with light usage. Don't get me wrong, I love me some killer battery life, but let's be real; it's totally innaccurate. I mean, hell... Technically, the battery isn't at 100% anymore the second you unplug the charger. I'm used to it now though, so it's all good.
  14. Mlrollin91 macrumors G5


    Nov 20, 2008
    Ventura County
    As others have stated. All Macs and iOS devices classify 100% on the readout as anything between 95%-100%. Once it drops below 95% the readout begins to move. At 50% readout the battery is 47.5% and at 0% readout the battery is well, 0%.
  15. HEK, Jul 4, 2016
    Last edited by a moderator: Jul 6, 2016

    HEK Suspended


    Sep 24, 2013
    Now I have heard it all!

    Damn my iPhone the battery last to long. My [Samsung] phone battery dropped after five minutes. What's wrong with Apple, they should thin the phone and put in a smaller battery.

    OP, Please find a hobby, anything just turn off the battery percentage meter and just use your phone and charge it every night.

    What next the white on my iPhone is too white and the black is too black. Why can't Apple make a nice grey iPhone.

    I'm going now, gonna stab myself in the eye a few times with a sharp stick and write a complaint thread it hurts, what could be wrong?
  16. Sunny1990 Suspended


    Feb 13, 2015
    I never turn on battery percentage ,I just enjoy using my iPhone without worrying much
  17. Newtons Apple macrumors Core

    Newtons Apple

    Mar 12, 2014
    Jacksonville, Florida
  18. wproct macrumors 6502


    Dec 4, 2014
    This isn't anything really new. I have owned many cars that the fuel gauge will stay on full for some period of time and then begin to progress to empty at a faster rate once the needle moves off of full. You just adapt once you recognize the trend after a few days of phone usage.
  19. cynics macrumors G4

    Jan 8, 2012
    Battery drain isn't linear so there will be times it moves faster or slower even doing the same task. It's normal.

    There is some intelligence built into the meter. I find draining the battery to 0% on occasion than fully charging it helps the meter seem a little more accurate.

    Regardless this is more to do with the meter than the battery itself.
  20. willmtaylor macrumors G3


    Oct 31, 2009
    A Natural State
    If you're worried about it, I have an iPhone 6 whose battery behaves more normally. For your peace of mind, I'd be more than happy to swap you. ;)
  21. Dukins macrumors newbie


    Jun 17, 2016
    Hell the reason I came back to iPhone is because the battery percentage stays at 100% longer than any other phone I've owned. Even if its minimally inaccurate, I won't complain. I brag about it.
  22. rugmankc macrumors 68000


    Sep 24, 2014
  23. SymptomFinger macrumors newbie

    Nov 2, 2013

    Way to be totally oblivious. The point is that the battery percentage is inaccurate. The OP just wanted to make sure there is nothing wrong with the battery. You act like he's complaining that it lasts too long.

    If it was dropping from 100 to 80 or some other number, or died instantly, I would be worried. If it goes down in normal increments, and continues to last for the day, it's fine.
  24. Savor Suspended


    Jun 18, 2010
    Just turn off the battery percentage. Some of my gadgets takes awhile to go from 100% to 99%. Actually my LG stays at 100% for 30-40 min. Then instead of 99%, it goes to 98%. Some of my other phones go to 99% within minutes.

    You should treat your phone battery like a laptop battery . Once it reaches 30-40%, charge it up but perhaps about 80%. The trickle charge at over 90% generates too much heat which will ruin the battery's health faster. Keep it topped off but don't worry too much if it doesn't reach 100% every time you recharge it. 40 to 80 levels is okay.

    I can be OCD like the OP especially when it comes to battery life. I check my SOT constantly. But lately with multiple phones, I just charge them when I feel like it. Only need to charge them once or twice a week. That's a full charge cycle only once a week. And not always fully to 100%. Good to have a couple phones with removable.

    My rooted LG is scheduled to reboot every midnight on Sunday. That's when I plan to charge it up to 100% before I sleep. Yesterday, it reached 38% and decided to charge it up to 60% because I prefer shallow charges. So when Saturday night arrives, it doesn't need to be charged for so long. I don't like overcharging them either.

    Just enjoy using your phone. Don't be OCD about how fast or slow it discharges from that first 1%. The battery meter isn't always accurate. Don't get caught up charging it from under 20%, charging it always to 100%, overcharging, looking at the % like a hawk, checking SOT, etc. Trust me, been there. Done that. Batteries eventually all die out.
  25. HEK, Jul 7, 2016
    Last edited: Jul 7, 2016

    HEK Suspended


    Sep 24, 2013
    After awhile some of this OCD stuff gets a bit old. Don't like my comment don't read it. How oblivious are you commenting on my oblivious comment. A minor bit of reading on these forums will tell anyone that battery percentages are at best estimates derived from voltage drops over time and are not nor ever meant to be dead nuts accurate. Might be best if Apple switched to full, half, and low symbols.

    I'm just glad that the signal strength is given in gross dots and bars. If a numerical figure were routinely given some people would wax on ad nausium about those numbers. And don't tell anyone about switching to dB numbers for signal strength cuz explaining what those numbers mean will take dozens and dozens of postings.

    Does the phone work, can you make calls, does it receive and send texts, then just use the thing and charge it each night, it really is that simple. This 38% vs 40%, how long it stays at 100%, timing one phone one day against another phone another day for percentage drop in 28 minutes. Jeez...... With the same phone, same battery you can't get same results if battery temperature is different. Too many variables for any meaningful comparisons to worry about.

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