Other Fast charging

Discussion in 'iPhone' started by kat.hayes, Sep 12, 2017.

  1. HereIsTom macrumors newbie

    HereIsTom

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    #201
    What I'm wondering, is that quick charging good for the battery?
     
  2. MjWoNeR macrumors 6502

    MjWoNeR

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    #202
    I think it all comes down to the specification the manufacturer built the battery. They made it charge that fast.

    My wild guess would be that fast charging might cause some slight deterioration, but nothing worth worrying over. Same deterioration could be caused just by living in a very warm climate.
     
  3. BeatCrazy macrumors 65816

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    #203
    As to be expected. The 7 Plus does not support Fast charging, you might as well use the 10 or 12W iPad charger with standard Lightning to USB-A cable.

    Which phone?



    Not trying to dissuade anyone from doing their own experiments, but I have a power draw meter, along with all the iPhones/iPads/bricks/cables, and the results have been consistent:

    Using both the Apple 29W and 61W (and presumably the 87W) charger and Apple 1m Lighting to USB-C cable, the 8 Plus was successfully able to negotiate 1.2A @ 15V for an ~18W power delivery. This is in contrast to my standard iPhone 8, which can do 2.4A @ 5V for 12W power delivery. The iPhone 8 with USB-C charger/cable charging is just marginally faster than an iPad 10W or 12W charger + standard USB-A to Lightning cable.

    NOTE: these “Fast charge” rates are only obtainable when the battery is <50%. Above that rate, the draw will slow down significantly, reduced to 5-6W when passing 80%.
     
  4. alexstjo macrumors member

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    #204
    Looks like you got a NICE german car there!!

     
  5. Techman82, Oct 5, 2017
    Last edited: Oct 5, 2017

    Techman82 macrumors member

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    #205
    If you go into settings/general/regulatory on 8 plus you will see the USB pd supported

    3CCBD3C4-8666-4955-8862-77796FCB70A2.jpeg
     
  6. daffie macrumors regular

    daffie

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    #206
    Ah yes sorry it's the 8 Plus.

    Btw I will conclude my test this weekend. Also will include (fast) wireless chargjng times.
     
  7. djcristi macrumors member

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    #207
    wireless charging on iphone is slow speed (5w) , it will be enabled fast (7.5w) in the future via software update.
     
  8. daffie macrumors regular

    daffie

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  9. Sparxxx macrumors regular

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    #209
  10. BigMcGuire, Oct 6, 2017
    Last edited: Oct 6, 2017

    BigMcGuire Contributor

    BigMcGuire

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    #210
  11. BeatCrazy macrumors 65816

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    #211
    You should cancel that Anker Powercore, too,

    It only delivers 18W via USB-A. And the iPhone 8 Plus can only take 18W via Lightning to USB-C connection.
     
  12. BigMcGuire Contributor

    BigMcGuire

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    #212
    Wow, so it is no different than a normal 2.4a 12w... Ugh. :(
     
  13. BeatCrazy macrumors 65816

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    #213
    An iPhone (even an 8 Plus) won't even pull 2.4A @ 12W from USB-A, more likely 2.0A @5W
     
  14. BigMcGuire Contributor

    BigMcGuire

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    #214
    Thanks for the info :(.
     
  15. HereIsTom macrumors newbie

    HereIsTom

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    #215
    I used the iPad 12W adapter and charged from 0 to 100% in 2 hours! It was in 30 minutes at 50%
     
  16. malikkamran macrumors 6502

    malikkamran

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    #216
    which iphone
     
  17. HereIsTom macrumors newbie

    HereIsTom

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  18. BigMcGuire, Oct 6, 2017
    Last edited: Oct 6, 2017

    BigMcGuire Contributor

    BigMcGuire

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    #218
  19. BeatCrazy macrumors 65816

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    #219
    A USB-A Lightning cable is not limited to 5W, it can deliver 12W to some iPads and 10W to most iPhones (at <50% battery).

    Note that the USB PD 3.0 spec your reference in the table above, can only be supported via USB-C interface on both the charger and the receiving device. Which is why only Apple's iPhone 8/8 Plus, along with the 10.5" and 12.9" iPads support >12W charging. They each have a USB-C PD chip/interface.
     
  20. BigMcGuire Contributor

    BigMcGuire

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    #220
    Ok great - thank you for taking the time to help me see that. This is an area I don't know a lot about. I appreciate it.
     
  21. daffie, Oct 6, 2017
    Last edited: Oct 7, 2017

    daffie macrumors regular

    daffie

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    #221
    Finished my test with the official Apple 12W ipad charger this evening. Below are the stats and comparison with the official Apple 29W usb-c charger + usb-c to lightning cable. Start at 5% battery level, wifi on, screen off.

    [​IMG]
     
  22. HereIsTom macrumors newbie

    HereIsTom

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    #222
    So it is only 10 minutes, that's very little to buy a USB-c charger.
     
  23. daffie macrumors regular

    daffie

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  24. djcristi macrumors member

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    #224
    to be abble to charge 8+ with 18w, you need an usb-c charger that does can switch to 14.5 - 15 Volts and supply at least 1.2 Amps. Using 9V ones the input is around 12-14W
     
  25. HereIsTom macrumors newbie

    HereIsTom

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    #225
    But does it charge faster? With iPad charger 12W from 0 to 100% in 2 hours!
     

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