How much battery loss is average over 1 year?

Discussion in 'iPhone' started by Stevessvt, Dec 21, 2016.

  1. Stevessvt macrumors 6502

    Joined:
    Jul 2, 2010
    #1
    Wife's 6S+ according to the app battery life has lost about 9.9% in exactly one year. Her 6+ that she still has and uses every day which is nearly 2 years old has only lost 8.6%. Is it normal to lose 10% capacity in only one year?
     
  2. JackieInCo macrumors 601

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #2
    That seems about right. My 6S+ is at about 92% with 88 cycles and my 6S is at about 92.8 with 93 cycles. I bought both in December '15.

    My 6+ is strangely enough at 97% after just about two years with 190 cycles.
     
  3. Stevessvt thread starter macrumors 6502

    Joined:
    Jul 2, 2010
    #3
    Huh,...strange that the older 6 batteries seem to be holding its charge better then the 6S's. But if it's similar to your experience then I guess it's normal. Thanks for responding.
     
  4. JackieInCo macrumors 601

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #4
    No problem. Just for fun, my 5S is at 82.58% with 315 cycles and the super old 3GS is at 94.83% with 587 cycles.
     
  5. KAB2010 macrumors 6502

    Joined:
    Aug 27, 2009
    Location:
    Louisiana
    #5
    I NEED to know how you only have that many charge cycles lol. A full year with only that few means you charge them every 4 nights roughly. The 6S can barely last a full working day if its used much. My iPhone 6 had nearly a thousand cycles after a year
     
  6. JackieInCo macrumors 601

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #6
    That's normal for my use. I have four lines activated on T-Mobile and a fifth line is a prepay. Obviously, only one is used to actually get calls and texts on and the others are used just as data devices like iPads.

    I use the 6S+ everyday and I have only used the 6S probably half the year with a sim in it and the other half, just on WiFi. The 6S, 6S+ and 6+ go about 2-4 days between having to charge them. I believe my record was 5 days on the 6S+ before.

    Mostly though I use the five lines on two S7 Edge phones, a Note 5, the 6S+ and the last line is currently in my 5S but I move it between the 6S and 6S+ frequently.
     
  7. Mlrollin91 macrumors G4

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #7
    That is horrible health for both of those batteries.

    iPhone are suppose to hold 80% health @ 500 cycles. Being at 92% after 88 cycles and 93% after 93 cycles is really bad. I am at 94 cycles on my 7Plus and still at 102% health.

    OP there is no way to measure what a battery is suppose to have after a year because its based on charge cycles. 80% @ 500 cycles is normal. So 250 cycles should get you about 90% because for the most part, health degradation is linear.
     
  8. JackieInCo macrumors 601

    Joined:
    Jul 18, 2013
    Location:
    Colorado
    #8
    I doubt Apple would replace the battery yet on my phones because it's not that bad yet. I'll wait till they get worse and take them in.
     
  9. Aneef macrumors regular

    Aneef

    Joined:
    Jun 4, 2015
    Location:
    Lahore, Pakistan
    #9
    How to calculate the charge cycles for iPhone?
     
  10. deano1972 macrumors 6502a

    deano1972

    Joined:
    Sep 16, 2016
    Location:
    United Kingdom
    #10
    I'm not sure how accurate the battery life app is. It fluctuates on my iPhone 5s between 10% and 29%. The phone is 3 years old.
     
  11. plsingh macrumors newbie

    Joined:
    Dec 16, 2016
    Location:
    India
    #11
    Call Apple and ask them to do a remote diagnostics.
     
  12. Mlrollin91 macrumors G4

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #12
    Battery life is somewhat accurate. Before iOS 10 it was spot on. This is because now it only rounds to the nearest 10/100. Coconut battery is going to be the most accurate way to measure your battery. This is because its using real time data/readings. It's normal for battery health to fluctuate 5-10% a day when healthy and up to 40% a day when unstable.

    Apples diagnostics on the other hand are not as accurate because it uses the average of the last 2 weeks when it spits out a number for health. Therefore if your battery started failing yesterday, it would not show up on diagnostics for a minimum of 2 weeks.
     
  13. BigMcGuire Contributor

    BigMcGuire

    Joined:
    Jan 10, 2012
    Location:
    California
    #13
    Mlrollin91 speaks truth!

    I've got 101 cycles on my 6s+ and it's at 97% life left.
    My wife's iPhone 6s+ has 187 cycles and 98% life left.

    My 6+ had 250+ cycles with 99.7% life left before I sold it back to Apple.
    My boss' iPhone 4s is at 70% left with 1000+ cycles. (Yeah, amazing).

    Every battery is a little different. How you treat the battery will affect health - example: Leaving it out in the sun, playing heavy games (heat), letting battery drain to 0 constantly, etc... These will have big detrimental effects on overall life of the battery.

    But not all batteries come EXACTLY 100%. My iPhone 6+ started out at 105% of design capacity. My 6s+ started out at 97%.

    But yeah, before iOS 10 these battery apps were a lot more accurate - Apple chose to hide a lot of the stats. I wouldn't worry about a 5-8% variance when using these apps. Like Mlrollin91 - I see coconutBattery (on a Mac) as the more accurate meter.
     
  14. Mlrollin91 macrumors G4

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #14
    Wow your iPhone came with 97% health!? I'm disappointed when I don't even get 101%. I can't imagine getting below 100% with 0 cycles. My average is about 102% for all of my devices. My iPad Air 2 is started at 100.5%. My 7Plus started at 103.5%.
     
  15. BigMcGuire Contributor

    BigMcGuire

    Joined:
    Jan 10, 2012
    Location:
    California
    #15
    Yep, first phone I ever had that came with under 100% :). My iPad minis, iPhone 6+, all came with well over 100%.

    But it's holding pretty steady (97%) even after 100 cycles. So I can't complain.
     
  16. lordofthereef macrumors G5

    lordofthereef

    Joined:
    Nov 29, 2011
    Location:
    Boston, MA
    #16
    The battery loss is almost directly comparable to the number of charge cycles. The more you use your device (off the charger) the more battery life you inevitably burn through. A little under one charge cycle a day should amount to about 10% per year.

    IMO toss the apps out the window and compare real world use. It's all that really matters, after all. Pretty excited my mom's phone got a free battery replacement from Apple (it was one of the launch day 6S effected by the manufacturing issue). Her phone should easily last her another two years, and since I am the one who buys them for her, that's great!
     
  17. Russtopher macrumors member

    Russtopher

    Joined:
    Apr 17, 2016
    Location:
    Pacific Northwest
    #17
    --- Post Merged, Jan 1, 2017 ---
    How do you check your battery cycles?

    RB
     
  18. Retops macrumors regular

    Joined:
    Feb 10, 2008
    Location:
    Oklahoma
    #18
    My 6+ was at 93% after one year of sporadic use and 76 cycles. At two years, including daily use for the second year, it was at 88% with 210 cycles.

    It is still my primary phone and a real workhorse. I don't notice any less battery life in real world use but have had a couple of blips in the last few weeks where it seemed to run out too soon. Since those two incidents, it is back to normal.

    The 7+ that it will eventually replace it is my secondary phone used mainly as a computer and email device.
     

Share This Page