iPad Pro IPP 12.9. How safe is fast charging?

Discussion in 'iPad' started by jaybar, Sep 16, 2017.

  1. jaybar macrumors 6502a

    jaybar

    Joined:
    Dec 11, 2008
    #1
    Hi

    i have the IPP 12.9 2017. Will fast charging compromise the battery in any way? Staff at my Apple Store seemed hesitant.

    Thanks.
     
  2. Brammy macrumors 68000

    Joined:
    Sep 17, 2008
  3. spiderman0616 macrumors 68040

    spiderman0616

    Joined:
    Aug 1, 2010
    #3
    Apple broadcasts this feature themselves. You can use it safely without worrying about damaging your iPad. I have had my 29w fast charger for a couple of weeks now and it has been fantastic to be able to charge my iPad Pro just as fast as I can charge my iPhone 7 Plus.
     
  4. acorntoy, Sep 17, 2017
    Last edited: Sep 17, 2017

    acorntoy macrumors 65816

    Joined:
    May 25, 2010
    #4
    Just like every other fast charger, it will take its toll. Had a 12.9 1st gen since January, had about 11% battery damage in that time using the fast charger strictly. Not using it on my 2nd gen. A faster charger will always put more strain on the battery, it's a good feature to have in an emergency, but it's probably not wise to use it as a main charger.
    --- Post Merged, Sep 17, 2017 ---

    It does hurt the battery.

    Look at it like this: Apple replaces a battery at 20% depletion in two years (if you have AppleCare) it really doesn't matter to them in two years if you lose 5% using the normal charger, or 15% using a fast charger, it will degrade your battery life.
     
  5. spiderman0616 macrumors 68040

    spiderman0616

    Joined:
    Aug 1, 2010
    #5
    I'd love to know how you came up with this 11% figure.
     
  6. acorntoy, Sep 17, 2017
    Last edited: Sep 17, 2017

    acorntoy macrumors 65816

    Joined:
    May 25, 2010
    #6
    Coconut battery (mac) And battery health (iOS). Both fairly accurate. You can believe it or not, but battery life of li-ion is very much affected by charge speed. Android devices have been roasted from iOS users because of this For years, and Apple has not magically fixed battery chemistry by introducing support for it. You should always chose the slowest charge that fits your needs. If your going to bed and not using it, use the 12w or even better an 5w charger instead, if you need to charge quickly because you need to leave, use the 29w. Also pro devices 10.5,12.9, charge slightly faster than a 7+ ever would, using a 12w charger on an iPhone doesn't put quite as much strain on the battery as using the 29w on the pros or using the 29w on the new 8/x would be.

    So the answer to OP: Fast charging is as bad today, as it was three weeks ago when iOS users were pointing out that it causes the battery to die faster. If you upgrade on a yearly basis, or really need a fast charge, the pros of fast charging might outway the cons.
     
  7. coreyk, Sep 17, 2017
    Last edited: Sep 17, 2017

    coreyk macrumors member

    coreyk

    Joined:
    Oct 20, 2011
    Location:
    SF Bay Area
    #7
    Here’s an interesting informational article about electric vehicle lithium ion battery charge rates, there’s a graph that illustrates rapid charging cell degradation like acorntoy is discussing above. The comments at the bottom are talking about how this would be applied to our mobile devices.

    http://batteryuniversity.com/learn/article/ultra_fast_chargers

    Apply the ultra-fast charge only when necessary. A well-designed ultra-fast charger should have charge-time selection to give the user the option to choose the least stressful charge for the time allotted. ​
     
  8. acorntoy macrumors 65816

    Joined:
    May 25, 2010
    #8
    Thank you, I was gonna say, if Apple had solved fast charging, they would have nearly every car manufacturer at their door offering them a ridiculous sum for the technology :p.
     
  9. coreyk macrumors member

    coreyk

    Joined:
    Oct 20, 2011
    Location:
    SF Bay Area
    #9
    I talk about electric vehicle batteries at work way more than I should be, there’s a single level 1 charger that 4 or 5 of my coworkers share and had to work out a round robin schedule, so people are always plugging and unplugging and playing musical cars.
     
  10. acorntoy macrumors 65816

    Joined:
    May 25, 2010
    #10
    It's really a fascinating issue because it is holding quite a lot back, things that are far more important than phone life. It'll be an amazing day when you can fast charge with no damage, and whoever creates the technology will no doubt become very, very rich.
     
  11. ApfelKuchen macrumors 68030

    Joined:
    Aug 28, 2012
    Location:
    Between the coasts
    #11
    Ultimately, Apple has to publish some data that explains this, one way or the other. Consumer protection laws more or less demand full disclosure of usage that would lead to less-than-expected performance.

    That said, I'm sure Apple is confident that its devices can be safely quick-charged, based on the software and hardware they provide. In other words, no more fires with quick charging than would be expected when charging the old, slow way. But it's unavoidable that faster charging generates more internal heat, and internal heat is going to prematurely age components like batteries. The only question is, how quickly will that happen?

    My feeling is that quick charging is a time-is-money decision. Those who must quick charge to improve their daily productivity will end up paying for it by replacing their battery sooner, rather than later. For some, that's a fair trade-off. For others, an unjustifiable luxury.
     

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10 September 16, 2017