Battery capacity

Discussion in 'iPad' started by AppleFan46, Jan 16, 2017.

  1. AppleFan46 macrumors newbie

    Joined:
    Jan 16, 2017
    #1
    Hi

    I've got the 9.7" iPad Pro since August 2016 and already lost 7% of the battery capacity. Neither my previous iPad (iPad 3 only 18% in 4 years) or my iPhones (currently 6S, in 1 year around 6%) have shown such a fast decrease in capacity.
    I don't charge my iPad that often (every 3-4 days) and I am worried that my battery is defect.
    Could you please check with Coconut Battery (Mac) or iBackupBot (Windows) how your battery is performing and report back to me?

    Thanks to everyone who does and best wishes!!!
     
  2. AppleFan46 thread starter macrumors newbie

    Joined:
    Jan 16, 2017
    #2
    Checking is also possible with this App :
    https://appsto.re/de/L0tJfb.i

    My exact capacity is 6800mah now, got the iPad for 4 1/2 months now...
    --- Post Merged, Jan 16, 2017 ---
    Again, for comparison, my iPhone lost in about 3 months just 0.9% (!) (had it swapped through apple care) of its battery capacity and is charged way more often...
     
  3. ardchoille50 macrumors 68020

    Joined:
    Feb 6, 2014
    #3
    Did you read the Most Critical reviews for this app? The implications are not positive.
     
  4. AppleFan46 thread starter macrumors newbie

    Joined:
    Jan 16, 2017
    #4
    I did, however, I get the same results when I check it with the computer :(
     
  5. Mlrollin91 macrumors G4

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #5
    The battery life app is not nearly as accurate as coconut battery. Coconut battery uses real time battery statistics, meanwhile battery life uses an estimate to the nearest 100mAh. iOS 10 changed how apps can read battery info, so only Mac/PC apps are truly accurate.

    As to battery health degrading. As long as you think you are capable of hitting 1000 cycles before it reaches 80% then your battery health is normal. No if you are at 100 cycles and 85% capacity, then there is pause for concern.

    My iPad Air 2 has 70 cycles and is at 96% health. So I am also seeing it degrade. One thing about iPad batteries compared to MacBook or iPhone batteries. They don't get used as much so they tend to just sit. Batteries need to be used. Even though lithium ion batteries do not have 'memory', if they are not used they won't hold a charge as well or for as long.
     
  6. joeblow7777 macrumors 601

    Joined:
    Sep 7, 2010
    #6
    Forget the percentages and the battery health apps and all of that, have you actually noticed a loss in battery life that is affecting your usage? It's very easy to become obsessed over nothing. I suggest deleting your battery health apps and just use your device. If you find that the battery life has become less than satisfactory, take it in to an Apple Store to get a proper analysis, and if there is a problem, they will address it.
     
  7. AppleFan46 thread starter macrumors newbie

    Joined:
    Jan 16, 2017
    #7
    Alright I see...

    Just to make it clear, I dont use the App, I use CoconutBattery to check my battery health like I wrote initially. However, I thought more people would report their capacities if they could check it within 1 minute via App and not within 5 minutes via Mac.

    I don't become obsessed, I just wanted to know if others report similar or different results, as I would try to swap the iPad if my battery was abnormal.
     
  8. bufffilm macrumors 601

    bufffilm

    Joined:
    May 3, 2011
    #8
    The pro 9.7 has a lousy battery life compared to the Air2 or the awesome Air1 battery.

    Yours is standard...not faulty, so get used to it.

    Your problem is not daily charging it...big mistake!
     
  9. Mlrollin91 macrumors G4

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #9
    Battery life and battery health are two separate matters.
     
  10. bufffilm macrumors 601

    bufffilm

    Joined:
    May 3, 2011
    #10
    But interrelated...poor battery treatment leads to poor battery health.
     
  11. Mlrollin91 macrumors G4

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #11
    Are you referring to poor treatment as having a smaller battery so it requires more charges which in-turn reduces battery health/capacity? If so, then I completely agree with you.
     
  12. Math889 macrumors 65816

    Joined:
    Jan 7, 2016
    #12
    Battery life on my Air 2 is excellent .
    After 1 year and 10 months of usage, battery is really good.
    95 cycles.
     
  13. Precursor macrumors 6502

    Precursor

    Joined:
    Sep 29, 2015
    Location:
    Istanbul
    #13
    Bought my 12.9" in Dec-2015, used heavily, every day
    Currently has 9100mah with 12% wear level
     
  14. Newtons Apple Suspended

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida
    #14
    I just use my devices and not worry about it. I charge my iPad every few days or as needed and have never been let down.

    I think there is too much worry about the battery life and for some they get obsessed with it.
     
  15. ardchoille50 macrumors 68020

    Joined:
    Feb 6, 2014
    #15
    For those who don't understand what a cycle is:

    "Charge your Apple lithium-ion battery whenever you want. There’s no need to let it discharge 100% before recharging. Apple lithium-ion batteries work in charge cycles. You complete one charge cycle when you’ve used (discharged) an amount that equals 100% of your battery’s capacity — but not necessarily all from one charge. For instance, you might use 75% of your battery’s capacity one day, then recharge it fully overnight. If you use 25% the next day, you will have discharged a total of 100%, and the two days will add up to one charge cycle. It could take several days to complete a cycle. The capacity of any type of battery will diminish after a certain amount of recharging. With lithium-ion batteries, the capacity diminishes slightly with each complete charge cycle. Apple lithium-ion batteries are designed to hold at least 80% of their original capacity for a high number of charge cycles, which varies depending on the product."

    Source: https://www.apple.com/batteries/why-lithium-ion/
     

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